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To Conclude, Therefore, Let No Man Out Of A Weak Conceit Of Sobriety, Or An Ill-applied Moderation, Think Or Maintain, That A Man Can Search Too Far Or Be Too Well Studied In The Book Of God's Word, Or In The Book Of God's Works; Divinity Or Philosophy; But Rather Let Men Endeavour An Endless Progress Or Proficience In Both."—bacon: "advancement Of Learning".

-Charles Darwin

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To Conclude, Therefore, Let

Charles Darwin

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To Conclude, Therefore, Let No Man Out Of A Weak Conceit Of Sobriety, Or An Ill-applied Moderation, Think Or Maintain, That A Man Can Search Too Far Or Be Too Well Studied In The Book Of God's Word, Or In The Book Of God's Works; Divinity Or Philosophy; But Rather Let Men Endeavour An Endless Progress Or Proficience In Both."—bacon: "advancement Of Learning".

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Man Tends To Increase At A Greater Rate Than His Means Of Subsistence.

Nature Will Tell You A Direct Lie If She Can.

Often A Cold Shudder Has Run Through Me, And I Have Asked Myself Whether I May Have Not Devoted Myself To A Fantasy.

I Have Deeply Regretted That I Did Not Proceed Far Enough At Least To Understand Something Of The Great Leading Principles Of Mathematics, For Men Thus Endowed Seem To Have An Extra Sense.

Consequently, If My Theory Be True, It Is Indisputable That Before The Lowest Silurian Stratum Was Deposited, Long Periods Elapsed, As Long As, Or Probably Far Longer Than, The Whole Interval From The Silurian Age To The Present Day; And That During These Vast, Yet Quite Unknown, Periods Of Time, The World Swarmed With Living Creatures. To The Question Why We Do Not Find Records Of These Vast Primordial Periods, I Can Give No Satisfactory Answer.

About Thirty Years Ago There Was Much Talk That Geologists Ought Only To Observe And Not Theorise; And I Well Remember Some One Saying That At This Rate A Man Might As Well Go Into A Gravel-pit And Count The Pebbles And Describe The Colours. How Odd It Is That Anyone Should Not See That All Observation Must Be For Or Against Some View If It Is To Be Of Any Service!

It Is Scarcely Possible To Doubt That The Love Of Man Has Become Instinctive In The Dog.

This Preservation Of Favourable Variations And The Destruction Of Injurious Variations, I Call Natural Selection, Or The Survival Of The Fittest. Variations Neither Useful Nor Injurious Would Not Be Affected By Natural Selection And Would Be Left A Fluctuating Element.

It May Be Said That Natural Selection Is Daily And Hourly Scrutinizing, Throughout The World, Every Variation, Even The Slightest; Rejecting That Which Is Bad, Preserving And Adding Up All That Is Good; Silently And Insensibly Working, Wherever And Whenever Opportunity Offers, At The Improvement Of Each Organic Being In Relation To Its Organic And Inorganic Conditions Of Life.

If It Could Be Demonstrated That Any Complex Organ Existed, Which Could Not Possibly Have Been Formed By Numerous, Successive, Slight Modifications, My Theory Would Absolutely Break Down. But I Can Find No Such Case.

Theory Of Evolution

Creation Science

Evolution Of Man

... Probably All The Organic Beings Which Have Ever Lived On This Earth Have Descended From Some One Primordial Form, Into Which Life Was First Breathed.

I Am Quite Conscious That My Speculations Run Beyond The Bounds Of True Science....it Is A Mere Rag Of An Hypothesis With As Many Flaw[s] & Holes As Sound Parts.

A Grain In The Balance Will Determine Which Individual Shall Live And Which Shall Die - Which Variety Or Species Shall Increase In Number, And Which Shall Decrease, Or Finally Become Extinct.

Blushing Is The Most Peculiar And Most Human Of All Expressions.

Some Few, And I Am One Of Them, Even Wish To God, Though At The Loss Of Millions Of Lives, That The North Would Proclaim A Crusade Against Slavery. In The Long-run, A Million Horrid Deaths Would Be Amply Repaid In The Cause Of Humanity. Great God! How I Should Like To See The Greatest Curse On Earth - Slavery - Abolished!

I Am Not Apt To Follow Blindly The Lead Of Other Men

Believing As I Do That Man In The Distant Future Will Be A Far More Perfect Creature Than He Now Is, It Is An Intolerable Thought That He And All Other Sentient Beings Are Doomed To Complete Annihilation After Such Long-continued Slow Progress.

When The Sexes Differ In Beauty, In The Power Of Singing, Or In Producing What I Have Called Instrumental Music, It Is Almost Invariably The Male Which Excels The Female.

Ignorance More Frequently Begets Confidence Than Does Knowledge: It Is Those Who Know Little, And Not Those Who Know Much, Who So Positively Assert That This Or That Problem Will Never Be Solved By Science.

It Is Impossible To Concieve Of This Immense And Wonderful Universe As The Result Of Blind Chance Or Necessity.

Light Will Be Thrown On The Origin Of Man And His History.

Theory Of Evolution

I Am Not The Least Afraid To Die

Famous Last Words

It Is Mere Rubbish Thinking, At Present, Of Origin Of Life; One Might As Well Think Of Origin Of Matter.

Attention, If Sudden And Close, Graduates Into Surprise; And This Into Astonishment; And This Into Stupefied Amazement.

Another Source Of Conviction In The Existence Of God, Connected With The Reason And Not With The Feelings, Impresses Me As Having Much More Weight. This Follows From The Extreme Difficulty Or Rather Impossibility Of Conceiving This Immense And Wonderful Universe, Including Man With His Capacity Of Looking Far Backwards And Far Into Futurity, As The Result Of Blind Chance Or Necessity. When Thus Reflecting I Feel Compelled To Look To A First Cause Having An Intelligent Mind In Some Degree Analogous To That Of Man; And I Deserve To Be Called A Theist.

Sympathy For The Lowest Animals Is One Of The Noblest Virtues With Which Man Is Endowed.

You Will Be Astonished To Find How The Whole Mental Disposition Of Your Children Changes With Advancing Years. A Young Child And The Same When Nearly Grown, Sometimes Differ Almost As Much As Do A Caterpillar And Butterfly.

It Is Easy To Specify The Individual Objects Of Admiration In These Grand Scenes; But It Is Not Possible To Give An Adequate Idea Of The Higher Feelings Of Wonder, Astonishment, And Devotion, Which Fill And Elevate The Mind.

I Have Been Speculating Last Night What Makes A Man A Discoverer Of Undiscovered Things; And A Most Perplexing Problem It Is. Many Men Who Are Very Clever - Much Cleverer Than The Discoverers - Never Originate Anything.

It Has Sometimes Been Said That The Success Of The Origin Proved "that The Subject Was In The Air," Or "that Men's Minds Were Prepared For It." I Do Not Think That This Is Strictly True, For I Occasionally Sounded Not A Few Naturalists, And Never Happened To Come Across A Single One Who Seemed To Doubt About The Permanence Of Species.

In My Most Extreme Fluctuations I Have Never Been An Atheist In The Sense Of Denying The Existence Of A God ... I Think That Generally (& More And More So As I Grow Older) But Not Always, That An Agnostic Would Be The Most Correct Description Of My State Of Mind.

Each Organic Being Is Striving To Increase In A Geometrical Ratio . . . Each At Some Period Of Its Life, During Some Season Of The Year, During Each Generation Or At Intervals, Has To Struggle For Life And To Suffer Great Destruction . . . The Vigorous, The Healthy, And The Happy Survive And Multiply.

Not One Change Of Species Into Another Is On Record ... We Cannot Prove That A Single Species Has Been Changed.

I Think It Inevitably Follows, That As New Species In The Course Of Time Are Formed Through Natural Selection, Others Will Become Rarer And Rarer, And Finally Extinct. The Forms Which Stand In Closest Competition With Those Undergoing Modification And Improvement Will Naturally Suffer Most.

...for The Shield May Be As Important For Victory, As The Sword Or Spear.

It Is A Fatal Fault To Reason Whilst Observing, Though So Necessary Beforehand And So Useful Afterwards.

Music Was Known And Understood Before Words Were Spoken.

I Have Called This Principle, By Which Each Slight Variation, If Useful, Is Preserved, By The Term Natural Selection, In Order To Mark Its Relation To Man's Power Of Selection. But The Expression Often Used By Mr. Herbert Spencer Of The Survival Of The Fittest Is More Accurate, And Is Sometimes Equally Convenient.

I Fully Agree With All That You Say On The Advantages Of Spencer's Excellent Expression Of 'the Survival Of The Fittest.' This, However, Had Not Occurred To Me Till Reading Your Letter. It Is, However, A Great Objection To This Term That It Cannot Be Used As A Substantive Governing A Verb; And That This Is A Real Objection I Infer From H. Spencer Continually Using The Words, Natural Selection.

Language Is An Art, Like Brewing Or Baking.... It Certainly Is Not A True Instinct, For Every Language Has To Be Learnt.

A Language, Like A Species, When Extinct, Never... Reappears.

Sympathy Beyond The Confines Of Man, That Is, Humanity To The Lower Animals, Seems To Be One Of The Latest Moral Acquisitions.

Not One Great Country Can Be Named, From The Polar Regions In The North To New Zealand In The South, In Which The Aborigines Do Not Tattoo Themselves.

It Is Often Said That All The Conditions For The First Production Of A Living Organism Are Now Present, Which Could Ever Have Been Present. But If (and Oh! What A Big If!) We Could Conceive In Some Warm Little Pond, With All Sorts Of Ammonia And Phosphoric Salts, Light, Heat, Electricity, &c., Present, That A Proteine Compound Was Chemically Formed Ready To Undergo Stillmore Complex Changes, At The Present Day Such Matter Would Be Instantly Devoured Or Absorbed, Which Would Not Have Been The Case Before Living Creatures Were Formed.

The Tree Of Life Should Perhaps Be Called The Coral Of Life, Base Of Branches Dead; So That Passages Cannot Be Seen-this Again Offers Contradiction To Constant Succession Of Germs In Progress.

The Instruction At Edinburgh Was Altogether By Lectures, And These Were Intolerably Dull, With The Exception Of Those On Chemistry.

Some Call It Evolution, And Others Call It God.

Nothing Is Easier Than To Admit In Words The Truth Of The Universal Struggle For Life, Or More Difficult - At Least I Have Found It So - Than Constantly To Bear This Conclusion In Mind...we Behold The Face Of Nature Bright With Gladness...we Do Not See, Or We Forget, That The Birds Which Are Idly Singing Round Us Mostly Live On Insects And Seeds, And Are Thus Constantly Destroying Life.

Looking To Future Generations, There Is No Cause To Fear That The Social Instincts Will Grow Weaker... The Social Instincts, - The Prime Principle Of Man's Moral Constitution - With The Aid Of Active Intellectual Powers And The Effects Of Habit, Naturally Lead To The Golden Rule, "as Ye Would That Men Should Do To You; Do Ye To Them Likewise"; And This Lies At The Foundation Of Morality.

Hereafter We Shall Be Compelled To Acknowledge That The Only Distinction Between Species And Well-marked Varieties Is, That The Latter Are Known, Or Believed To Be Connected At The Present Day By Intermediate Gradations Whereas Species Were Formerly Thus Connected.

There Are Several Other Sources Of Enjoyment In A Long Voyage, Which Are Of A More Reasonable Nature. The Map Of The World Ceases To Be A Blank; It Becomes A Picture Full Of The Most Varied And Animated Figures.

We Are Always Slow In Admitting Any Great Change Of Which We Do Not See The Intermediate Steps

The Love For All Living Creatures Is The Most Noble Attribute Of Man.

Nothing Is Easier Than To Admit In Words The Truth Of The Universal Struggle For Life, Or More Difficult--at Least I Have Found It So--than Constantly To Bear This Conclusion In Mind.

We May Confidently Come To The Conclusion, That The Forces Which Slowly And By Little Starts Uplift Continents, And That Those Which At Successive Periods Pour Forth Volcanic Matter From Open Orifices, Are Identical.

A Man Who Has No Assured And Ever Present Belief In The Existence Of A Personal God Or Of A Future Existence With Retribution And Reward, Can Have For His Rule Of Life, As Far As I Can See, Only To Follow Those Impulses And Instincts Which Are The Strongest Or Which Seem To Him The Best Ones

If Every One Were Cast In The Same Mould, There Would Be No Such Thing As Beauty.

We Fancied Even That The Bushes Smelt Unpleasantly.

At No Time Am I A Quick Thinker Or Writer: Whatever I Have Done In Science Has Solely Been By Long Pondering, Patience And Industry.

Your Words Have Come True With A Vengeance That I Shd [should] Be Forestalled ... I Never Saw A More Striking Coincidence. If Wallace Had My M.s. Sketch Written Out In 1842 He Could Not Have Made A Better Short Abstract! Even His Terms Now Stand As Heads Of My Chapters.

The Several Difficulties Here Discussed, Namely Our Not Finding In The Successive Formations Infinitely Numerous Transitional Links Between The Many Species Which Now Exist Or Have Existed; The Sudden Manner In Which Whole Groups Of Species Appear In Our European Formations; The Almost Entire Absence, As At Present Known, Of Fossiliferous Formations Beneath The Silurian Strata, Are All Undoubtedly Of The Gravest Nature.

If Worms Have The Power Of Acquiring Some Notion, However Rude, Of The Shape Of An Object And Over Their Burrows, As Seems The Case, They Deserve To Be Called Intelligent; For They Act In Nearly The Same Manner As Would Man Under Similar Circumstances.

Even The Humblest Mammal's Strong Sexual, Parental, And Social Instincts Give Rise To 'do Unto Others As Yourself' And 'love Thy Neighbor As Thyself'.

Man Is Descended From A Hairy, Tailed Quadruped, Probably Arboreal In Its Habits.

Nothing Exists For Itself Alone, But Only In Relation To Other Forms Of Life

Man Scans With Scrupulous Care The Character And Pedigree Of His Horses, Cattle, And Dogs Before He Matches Them; But When He Comes To His Own Marriage He Rarely, Or Never, Takes Any Such Care.

The Young Blush Much More Freely Than The Old But Not During Infancy, Which Is Remarkable, As We Know That Infants At A Very Early Age Redden From Passion.

I Fully Subscribe To The Judgement Of Those Writers Who Maintain That Of All The Differences Between Man And The Lower Animal, The Moral Sense Of Conscience Is By Far The Most Important....it Is The Most Noble Of All The Attributes Of Man.

The Season Of Love Is That Of Battle. The Roots Of These Fights Run Deep.

Building A Better Mousetrap Merely Results In Smarter Mice.

I Look At The Natural Geological Record As A History Of The World Imperfectly Kept And Written In A Changing Dialect; Of This History We Possess The Last Volume Alone, Relating Only To Two Or Three Countries. Of This Volume, Only Here And There A Short Chapter Has Been Preserved; And Of Each Page, Only Here And There A Few Lines.

For My Own Part I Would As Soon Be Descended From That Heroic Little Monkey, Who Braved His Dreaded Enemy In Order To Save The Life Of His Keeper; Or From That Old Baboon, Who, Descending From The Mountains, Carried Away In Triumph His Young Comrade From A Crowd Of Astonished Dogs-as From A Savage Who Delights To Torture His Enemies, Offers Up Bloody Sacrifices, Practices Infanticide Without Remorse, Treats His Wives Like Slaves, Knows No Decency, And Is Haunted By The Grossest Superstitions.

A Novel According To My Taste, Does Not Come Into The Moderately Good Class Unless It Contains Some Person Whom One Can Thoroughly Love - And If A Pretty Woman, All The Better.

When It Was First Said That The Sun Stood Still And World Turned Round, The Common Sense Of Mankind Declared The Doctrine False; But The Old Saying Of Vox Populi, Vox Dei [the Voice Of The People Is The Voice Of God], As Every Philosopher Knows, Cannot Be Trusted In Science.

As Natural Selection Works Solely By And For The Good Of Each Being, All Corporeal And Mental Endowments Will Tend To Progress Toward Perfection.

Till Facts Are Grouped & Called There Can Be No Prediction. The Only Advantage Of Discovering Laws Is To Foretell What Will Happen & To See Bearing Of Scattered Facts.

Mere Chance ... Alone Would Never Account For So Habitual And Large An Amount Of Difference As That Between Varieties Of The Same Species.

Origin Of Species

I Am A Firm Believer, That Without Speculation There Is No Good And Original Observation.

In The Struggle For Survival, The Fittest Win Out At The Expense Of Their Rivals Because They Succeed In Adapting Themselves Best To Their Environment.

Whenever I Have Found That I Have Blundered, Or That My Work Has Been Imperfected, And When I Have Been Contemptuously Criticised, And Even When I Have Been Overpraised, So That I Have Felt Mortified, It Has Been My Greatest Comfort To Say Hundreds Of Times To Myself That 'i Have Worked As Hard As I Could, And No Man Can Do More Than This.'

Man Is More Courageous, Pugnacious, And Energetic Than Woman, And Has A More Inventive Genius. His Brain Is Absolutely Larger, But Whether Relatively To The Larger Size Of His Body, In Comparison With That Of Woman, Has Not, I Believe Been Fully Ascertained. In Woman The Face Is Rounder; The Jaws And The Base Of The Skull Smaller; The Outlines Of Her Body Rounder, In Parts More Prominent; And Her Pelvis Is Broader Than In Man; But This Latter Character May Perhaps Be Considered Rather As A Primary Than A Secondary Sexual Character. She Comes To Maturity At An Earlier Age Than Man.

Farewell Australia! You ... Are Too Great And Ambitious For Affection, Yet Not Great Enough For Respect. I Leave Your Shores Without Sorrow Or Regret.

A Fair Result Can Be Obtained Only By Fully Stating And Balancing The Facts And Arguments On Both Sides Of Each Question." Charles Darwin

I Am Almost Convinced (quite Contrary To Opinion I Started With) That Species Are Not (it Is Like Confessing A Murder) Immutable.

Origin Of Species

Besides Love And Sympathy, Animals Exhibit Other Qualities Connected With The Social Instincts Which In Us Would Be Called Moral.

As For A Future Life, Every Man Must Judge For Himself Between Conflicting Vague Probabilities.

On Seeing The Marsupials In Australia For The First Time And Comparing Them To Placental Mammals: “an Unbeliever . . . Might Exclaim 'surely Two Distinct Creators Must Have Been At Work'”

The Impossibility Of Conceiving That This Grand And Wondrous Universe, With Our Conscious Selves, Arose Through Chance, Seems To Me The Chief Argument For  the Existence Of God.

In The Long History Of Humankind (and Animal Kind, Too) Those Who Learned To Collaborate And Improvise Most Effectively Have Prevailed.

Nevertheless So Profound Is Our Ignorance, And So High Our Presumption, That We Marvel When We Hear Of The Extinction Of An Organic Being; And As We Do Not See The Cause, We Invoke Cataclysms To Desolate The World, Or Invent Laws On The Duration Of The Forms Of Life!

From The First Dawn Of Life, All Organic Beings Are Found To Resemble Each Other In Descending Degrees, So That They Can Be Classed In Groups Under Groups. This Classification Is Evidently Not Arbitrary Like The Grouping Of Stars In Constellations.

I Am Turned Into A Sort Of Machine For Observing Facts And Grinding Out Conclusions.

Seeing Every Height Crowned With Its Crater, And The Boundaries Of Most Of The Lava-streams Still Distinct, We Are Led To Believe That Within A Period, Geologically Recent, The Unbroken Ocean Was Here Spread Out. Hence, Both In Space And Time, We Seem To Be Brought Somewhat Near To That Great Fact — That Mystery Of Mysteries — The First Appearance Of New Beings On This Earth.

The Willing Horse Is Always Overworked.

There Is No Fundamental Difference Between Man And The Higher Mammals In Their Mental Faculties...the Difference In Mind Between Man And The Higher Animals, Great As It Is, Certainly Is One Of Degree And Not Of Kind.

Only The Fittest Will Survive.

I Am Aware That The Conclusions Arrived At In This Work Will Be Denounced By Some As Highly Irreligious; But He Who Denounces Them Is Bound To Show Why It Is More Irreligious To Explain The Origin Of Man As A Distinct Species By Descent From Some Lower From, Through The Laws Of Variation And Natural Selection, Than To Explain The Birth Of The Individual Through The Laws Of Ordinary Reproduction. The Birth Both Of The Species And Of The Individual Are Equally Parts Of That Grand Sequence Of Events, Which Our Minds Refuse To Accept As The Result Of Blind Chance.

On Your Life, Underestimating The Proclivities Of Finches Is Likely To Lead To Great Internal Hemorrhaging.

It Is Really Laughable To See What Different Ideas Are Prominent In Various Naturalists' Minds, When They Speak Of 'species'; In Some, Resemblance Is Everything And Descent Of Little Weight-in Some, Resemblance Seems To Go For Nothing, And Creation The Reigning Idea-in Some, Descent Is The Key,-in Some, Sterility An Unfailing Test, With Others It Is Not Worth A Farthing. It All Comes, I Believe, From Trying To Define The Undefinable.

I Feel Like An Old Warhorse At The Sound Of A Trumpet When I Read About The Capturing Of Rare Beetles.

One General Law, Leading To The Advancement Of All Organic Beings, Namely, Multiply, Vary, Let The Strongest Live And The Weakest Die.

Origin Of Species

The Chief Distinction In The Intellectual Powers Of The Two Sexes Is Shown By Mans Attaining To A Higher Eminence, In Whatever He Takes Up, Than The Woman. Whether Deep Thought, Reason, Or Imagination Or Merely The Use Of The Senses And Hands.....we May Also Infer.....the Average Mental Power In Man Must Be Above That Of Woman.

How Fleeting Are The Wishes And Efforts Of Man! How Short His Time! And Consequently How Poor Will His Products Be, Compared With Those Accumulated By Nature During Whole Geological Periods. Can We Wonder, Then, That Nature's Productions Should Be Far 'truer' In Character Than Man's Productions; That They Should Be Infinitely Better Adapted To The Most Complex Conditions Of Life, And Should Plainly Bear The Stamp Of Far Higher Workmanship?

My Mind Seems To Have Become A Kind Of Machine For Grinding General Laws Out Of Large Collections Of Facts, But Why This Should Have Caused The Atrophy Of That Part Of The Brain That Alone On Which The Higher Tastes Depend, I Cannot Conceive. A Man With A Mind More Highly Organised Or Better Constituted Than Mine Would Not, I Suppose, Have Thus Suffered, And If I Had To Live My Life Over Again, I Would Have Made A Rule To Read Some Poetry And Listen To Some Music At Least Once Every Week; For Perhaps The Parts Of My Brain Now Atrophied Would Thus Have Been Kept Alive Through Use.

Seeing This Gradation And Diversity Of Structure In One Small, Intimately Related Group Of Birds, One Might Really Fancy That From An Original Paucity Of Birds In This Archipelago, One Species Had Been Taken And Modified For Different Ends.

As The Sense Of Smell Is So Intimately Connected With That Of Taste, It Is Not Surprising That An Excessively Bad Odour Should Excite Wretching Or Vomitting In Some Persons.

I Believe We Were All Glad To Leave New Zealand. It Is Not A Pleasant Place. Amongst The Natives There Is Absent That Charming Simplicity .... And The Greater Part Of The English Are The Very Refuse Of Society.

The Following Proposition Seems To Me In A High Degree Probable—namely, That Any Animal Whatever, Endowed With Well-marked Social Instincts, The Parental And Filial Affections Being Here Included, Would Inevitably Acquire A Moral Sense Or Conscience, As Soon As Its Intellectual Powers Had Become As Well, Or Nearly As Well Developed, As In Man. For, Firstly, The Social Instincts Lead An Animal To Take Pleasure In The Society Of Its Fellows, To Feel A Certain Amount Of Sympathy With Them, And To Perform Various Services For Them.

Progress Has Been Much More General Than Retrogression

During My Second Year At Edinburgh [1826-27] I Attended Jameson's Lectures On Geology And Zoology, But They Were Incredible Dull. The Sole Effect They Produced On Me Was The Determination Never As Long As I Lived To Read A Book On Geology.

Much Love Much Trial, But What An Utter Desert Is Life Without Love.

In However Complex A Manner This Feeling May Have Originated, As It Is One Of High Importance To All Those Animals Which Aid And Defend One Another, It Will Have Been Increased Through Natural Selection; For Those Communities, Which Included The Greatest Number Of The Most Sympathetic Members, Would Flourish Best, And Rear The Greatest Number Of Offspring.

The Highest Possible Stage In Moral Culture Is When We Recognize That We Ought To Control Our Thoughts.

I Cannot Persuade Myself That A Beneficient And Omnipotent God Would Have Designedly Created...that A Cat Should Play With Mice.

This Fundamental Subject Of Natural Selection Will Be Treated At Some Length In The Fourth Chapter; And We Shall Then See How Natural Selection Almost Inevitably Causes Much Extinction Of The Less Improved Forms Of Life And Induces What I Have Called Divergence Of Character.

It Strikes Me That All Our Knowledge About The Structure Of Our Earth Is Very Much Like What An Old Hen Would Know Of The Hundred-acre Field In A Corner Of Which She Is Scratching.

The Lower Animals, On The Other Hand, Must Have Their Bodily Structure Modified In Order To Survive Under Greatly Changed Conditions. They Must Be Rendered Stronger, Or Acquire More Effective Teeth Or Claws, In Order To Defend Themselves From New Enemies; Or They Must Be Reduced In Size So As To Escape Detection And Danger. When They Migrate Into A Colder Climate They Must Become Clothed With Thicker Fur, Or Have Their Constitutions Altered. If They Fail To Be Thus Modified, They Will Cease To Exist.

The Lower Animals, Like Man, Manifestly Feel Pleasure And Pain, Happiness And Misery. Happiness Is Never Better Exhibited Than By Young Animals, Such As Puppies, Kittens, Lambs, &c., When Playing Together, Like Our Own Children.

Every New Body Of Discovery Is Mathematical In Form, Because There Is No Other Guidance We Can Have.

I Conclude That The Musical Notes And Rhythms Were First Acquired By The Male Or Female Progenitors Of Mankind For The Sake Of Charming The Opposite Sex.

It's Not The Strongest, But The Most Adaptable That Survive.

We Cannot Fathom The Marvelous Complexity Of An Organic Being; But On The Hypothesis Here Advanced This Complexity Is Much Increased. Each Living Creature Must Be Looked At As A Microcosm--a Little Universe, Formed Of A Host Of Self-propagating Organisms, Inconceivably Minute And As Numerous As The Stars In Heaven.

[t]he Young And The Old Of Widely Different Races, Both With Man And Animals, Express The Same State Of Mind By The Same Movements.

But Just In Proportion As This Process Of Extermination Has Acted On An Enormous Scale, So Must The Number Of Intermediate Varieties, Which Have Formerly Existed, Be Truly Enormous. Why Then Is Not Every Geological Formation And Every Stratum Full Of Such Intermediate Links? Geology Assuredly Does Not Reveal Any Such Finely Graduated Organic Chain; And This, Perhaps, Is The Most Obvious And Serious Objection Which Can Be Urged Against The Theory. The Explanation Lies, As I Believe, In The Extreme Imperfection Of The Geological Record.

Theory Of Evolution

Who When Examining In The Cabinet Of The Entomologist The Gay And Exotic Butterflies, And Singular Cicadas, Will Associate With These Lifeless Objects, The Ceaseless Harsh Music Of The Latter, And The Lazy Flight Of The Former - The Sure Accompaniments Of The Still, Glowing Noonday Of The Tropics.

I Have Long Discovered That Geologists Never Read Each Other's Works, And That The Only Object In Writing A Book Is A Proof Of Earnestness.

With Highly Civilised Nations Continued Progress Depends In A Subordinate Degree On Natural Selection; For Such Nations Do Not Supplant And Exterminate One Another As Do Savage Tribes.

Mathematics Seems To Endow One With Something Like A New Sense.

A Celebrated Author And Divine Has Written To Me That He Has Gradually Learned To See That It Is Just As Noble A Conception Of The Deity To Believe That He Created A Few Original Forms Capable Of Self-development Into Other And Needful Forms, As To Believe That He Required A Fresh Act Of Creation To Supply The Voids Caused By The Action Of His Laws.

From My Early Youth I Have Had The Strongest Desire To Understand Or Explain Whatever I Observed. ... To Group All Facts Under Some General Laws.

...he Who Remains Passive When Over-whelmed With Grief Loses His Best Chance Of Recovering His Elasticity Of Mind.

I Would Give Absolutely Nothing For The Theory Of Natural Selection, If It Requires Miraculous Additions At Any One Stage Of Descent.

It Is Certain That There May Be Extraordinary Mental Activity With An Extremely Small Absolute Mass Of Nervous Matter: Thus The Wonderfully Diversified Instincts, Mental Powers, And Affections Of Ants Are Notorious, Yet Their Cerebral Ganglia Are Not So Large As The Quarter Of A Small Pin's Head. Under This Point Of View, The Brain Of An Ant Is One Of The Most Marvelous Atoms Of Matter In The World, Perhaps More So Than The Brain Of A Man.

I Never Gave Up Christianity Until I Was Forty Years Of Age.

I Have No Great Quickness Of Apprehension Or Wit Which Is So Remarkable In Some Clever Men, For Instance Huxley

I Have Tried Lately To Read Shakespeare, And Found It So Intolerably Dull That It Nauseated Me.

Hence, A Traveller Should Be A Botanist, For In All Views Plants Form The Chief Embellishment.

False Facts Are Highly Injurious To The Progress Of Science, For They Often Endure Long; But False Views, If Supported By Some Evidence, Do Little Harm, For Every One Takes A Salutary Pleasure In Proving Their Falseness.

Theory Of Evolution

When I View All Beings Not As Special Creations, But As The Lineal Descendants Of Some Few Beings Which Lived Long Before The First Bed Of The Cambrian System Was Deposited, They Seem To Me To Become Ennobled.

Disbelief Crept Over Me At A Very Slow Rate, But At Last It Was Complete.

To Suppose That The Eye Could Have Been Formed By Natural Selection, Seems, I Freely Confess, Absurd In The Highest Possible Degree

Theory Of Evolution

Creation Science

It Is Well-known That Those Who Have Charge Of Young Infants, That It Is Difficult To Feel Sure When Certain Movements About Their Mouths Are Really Expressive; That Is When They Really Smile. Hence I Carefully Watched My Own Infants. One Of Them At The Age Of Forty-five Days, And Being In A Happy Frame Of Mind, Smiled... I Observed The Same Thing On The Following Day: But On The Third Day The Child Was Not Quite Well And There Was No Trace Of A Smile, And This Renders It Probable That The Previous Smiles Were Real.

Natural Selection Acts Solely By Accumulating Slight Successive Favorable Variations, It Can Produce No Great Or Sudden Modification; It Can Act Only By Very Short Steps.

If I Had Life To Live Over Again, I Would Give My Life To Poetry, To Music, To Literature, And To Art To Make Life Richer And Happier. In My Youth I Steeled Myself Against Them And Thought Them So Much Waste.

If A Person Asked My Advice, Before Undertaking A Long Voyage, My Answer Would Depend Upon His Possessing A Decided Taste For Some Branch Of Knowledge, Which Could By This Means Be Advanced. No Doubt It Is A High Satisfaction To Behold Various Countries And The Many Races Of Mankind, But The Pleasures Gained At The Time Do Not Counterbalance The Evils.

The Most Important Factor In Survival Is Neither Intelligence Nor Strength But Adaptability.

...i Have Always Maintained That, Excepting Fools, Men Did Not Differ Much In Intellect, Only In Zeal And Hard Work; And I Still Think There Is An Eminently Important Difference.

It May Be Doubted That There Are Many Other Animals Which Have Played So Important A Part In The History Of The World As Have These Lowly Organized Creatures.

May We Not Suspect That The Vague But Very Real Fears Of Children, Which Are Quite Independent Of Experience, Are The Inherited Effects Of Real Dangers And Abject Superstitions During Ancient Savage Times?

If I Had My Life To Live Over Again, I Would Have Made A Rule To Read Some Poetry And Listen To Some Music At Least Once Every Week.

It Appears To Me (whether Rightly Or Wrongly) That Direct Arguments Against Christianity And Theism Produce Hardly Any Effect On The Public; And Freedom Of Thought Is Best Promoted By The Gradual Illumination Of Men's Minds, Which Follows From The Advance Of Science.

Linnaeus And Cuvier Have Been My Two Gods, Though In Very Different Ways, But They Were Mere Schoolboys To Old Aristotle.

The Moral Faculties Are Generally Esteemed, And With Justice, As Of Higher Value Than The Intellectual Powers. But We Should Always Bear In Mind That The Activity Of The Mind In Vividly Recalling Past Impressions Is One Of The Fundamental Though Secondary Bases Of Conscience. This Fact Affords The Strongest Argument For Educating And Stimulating In All Possible Ways The Intellectual Faculties Of Every Human Being.

The Fact Of Evolution Is The Backbone Of Biology, And Biology Is Thus In The Peculiar Position Of Being A Science Founded On An Improved Theory, Is It Then A Science Or Faith?

Theory Of Evolution

I Must Begin With A Good Body Of Facts And Not From A Principle (in Which I Always Suspect Some Fallacy) And Then As Much Deduction As You Please.

Among The Scenes Which Are Deeply Impressed On My Mind, None Exceed In Sublimity The Primeval [tropical] Forests, ... Temples Filled With The Varied Productions Of The God Of Nature. No One Can Stand In These Solitudes Unmoved, And Not Feel That There Is More In Man Than The Mere Breath Of His Body.

I Love Fools' Experiments. I Am Always Making Them.

Theory Of Evolution

Now When Naturalists Observe A Close Agreement In Numerous Small Details Of Habits, Tastes And Dispositions Between Two Or More Domestic Races, Or Between Nearly-allied Natural Forms, They Use This Fact As An Argument That All Are Descended From A Common Progenitor Who Was Thus Endowed; And Consequently That All Should Be Classed Under The Same Species. The Same Argument May Be Applied With Much Force To The Races Of Man.

It May Be Conceit, But I Believe The Subject Will Interest The Public, And I Am Sure That The Views Are Original.

The Formation Of Different Languages And Of Distinct Species And The Proofs That Both Have Been Developed Through A Gradual Process, Are Curiously Parallel.

When Primeval Man ﬁrst Used ﬂint Stones For Any Purpose, He Would Have Accidentally Splintered Them, And Would Then Have Used The Sharp Fragments. From This Step It Would Be A Small One To Break The ﬂints On Purpose And Not A Very Wide Step To Fashion Them Rudely.

Even When We Are Quite Alone, How Often Do We Think With Pleasure Or Pain Of What Others Think Of Us - Of Their Imagined Approbation Or Disapprobation.

We Have Seen That The Senses And Intuitions, The Various Emotions And Faculties, Such As Love, Memory, Attention And Curiosity, Imitation, Reason, Etc., Of Which Man Boasts, May Be Found In An Incipient, Or Even Sometimes In A Well-developed Condition, In The Lower Animals.

The Earthquake, However, Must Be To Every One A Most Impressive Event: The Earth, Considered From Our Earliest Childhood As The Type Of Solidity, Has Oscillated Like A Thin Crust Beneath Our Feet; And In Seeing The Laboured Works Of Man In A Moment Overthrown, We Feel The Insignificance Of His Boasted Power.

If Mozart, Instead Of Playing The Pianoforte At Three Years Old With Wonderfully Little Practice, Had Played A Tune With No Practice At All, He Might Truly Have Been Said To Have Done So Instinctively.

I Had Gradually Come, By This Time [1839-01], To See That The Old Testament From Its Manifestly False History Of The World, With The Tower Of Babel, The Rainbow As A Sign, Etc., Etc. And From Its Attributing To God The Feelings Of A Revengeful Tyrant, Was No More To Be Trusted Than The Sacred Books Of The Hindoos, Or The Beliefs Of Any Barbarian.

Endless Forms Most Beautiful And Most Wonderful Have Been, And Are Being Evolved

Theory Of Evolution

I Trust And Believe That The Time Spent In This Voyage ... Will Produce Its Full Worth In Natural History; And It Appears To Me The Doing What Little We Can To Increase The General Stock Of Knowledge Is As Respectable An Object Of Life, As One Can In Any Likelihood Pursue.

Light May Be Shed On Man And His Origins.

The Main Conclusion Arrived At In This Work, Namely That Man Is Descended From Some Lowly-organised Form, Will, I Regret To Think, Be Highly Distasteful To Many Persons. But There Can Hardly Be A Doubt That We Are Descended From Barbarians.

Describing Laughter: The Sound Is Produced By A Deep Inspiration Followed By Short, Interrupted, Spasmodic Contractions Of The Chest, And Especially The Diaphragm... The Mouth Is Open More Or Less Widely, With The Corners Drawn Much Backwards, As Well As A Little Upwards; And The Upper Lip Is Somewhat Raised.

In The Survival Of Favoured Individuals And Races, During The Constantly-recurring Struggle For Existence, We See A Powerful And Ever-acting Form Of Selection.

From The War Of Nature, From Famine And Death, The Most Exalted Object Which We Are Capable Of Conceiving, Namely, The Production Of Higher Animals, Directly Follows.

[herschel And Humboldt] Stirred Up In Me A Burning Zeal To Add Even The Most Humble Contribution To The Noble Structure Of Natural Science. No One Or A Dozen Other Books Influenced Me Nearly So Much As These Two. I Copied Out From Humboldt Long Passages About Teneriffe And Read Them Aloud On One Of [my Walking Excursions].

Free Will Is To Mind What Chance Is To Matter.

I Often Had To Run Very Quickly To Be On Time, And From Being A Fleet Runner Was Generally Successful; But When In Doubt I Prayed Earnestly To God To Help Me, And I Well Remember That I Attributed My Success To The Prayers And Not To My Quick Running, And Marvelled How Generally I Was Aided.

There Is A Grandeur In This View Of Life, From So Simple A Beginning Endless Forms Most Beautiful Are Being Evolved

The Western Nations Of Europe, Who Now So Immeasurably Surpass Their Former Savage Progenitors, And Stand At The Summit Of Civilization, Owe Little Or None Of Their Superiority To Direct Inheritance From The Old Greeks, Though They Owe Much To The Written Works Of That Wonderful People.

I Cannot Anyhow Be Contented To View This Wonderful Universe, And Especially The Nature Of Man, And To Conclude That Everything Is The Result Of Brute Force. I Am Inclined To Look At Everything As Resulting From Designed Laws, With The Details, Whether Good Or Bad, Left To The Working Out Of What We Call Chance. Not That This Notion At All Satisfies Me. I Feel Most Deeply That The Whole Subject Is Too Profound For The Human Intellect. A Dog Might As Well Speculate On The Mind Of Newton. Let Each Man Hope And Believe What He Can.

Why, If Species Have Descended From Other Species By Insensibly Fine Gradations, Do We Not Everywhere See Innumerable Transitional Forms.

Origin Of Species

Man In His Arrogance Thinks Himself A Great Work, Worthy The Interposition Of A Great Deity. More Humble And I Believe True To Consider Him Created From Animals.

Thus Disbelief Crept Over Me At A Very Slow Rate, But At Last Was Complete. The Rate Was So Slow That I Felt No Distress, And Have Never Since Doubted Even For A Single Second That My Conclusion Was Correct.

A Scientific Man Ought To Have No Wishes, No Affections, - A Mere Heart Of Stone.

History Shows That The Human Mind, Fed By Constant Accessions Of Knowledge, Periodically Grows Too Large For Its Theoretical Coverings, And Bursts Them Asunder To Appear In New Habiliments, As The Feeding And Growing Grub, At Intervals, Casts Its Too Narrow Skin And Assumes Another.

I Could Show Fight On Natural Selection Having Done And Doing More For The Progress Of Civilization Than You Seem Inclined To Admit. Remember What Risk The Nations Of Europe Ran, Not So Many Centuries Ago Of Being Overwhelmed By The Turks, And How Ridiculous Such An Idea Now Is! The More Civilised So-called Caucasian Races Have Beaten The Turkish Hollow In The Struggle For Existence. Looking To The World At No Very Distant Date, What An Endless Number Of The Lower Races Will Have Been Eliminated By The Higher Civilized Races Throughout The World.

On The Theory Of Natural Selection We Can Clearly Understand The Full Meaning Of That Old Canon In Natural History, “natura Non Facit Saltum.” This Canon, If We Look Only To The Present Inhabitants Of The World, Is Not Strictly Correct, But If We Include All Those Of Past Times, It Must By My Theory Be Strictly True.

I Am Dying By Inches, From Not Having Any Body To Talk To About Insects.

The Voyage Of The Beagle Has Been By Far The Most Important Event In My Life And Has Determined My Whole Career; Yet It Depended On So Small A Circumstance As My Uncle Offering To Drive Me 30 Miles To Shrewsbury, Which Few Uncles Would Have Done, And On Such A Trifle As The Shape Of My Nose.

A Cell Is A Complex Structure, With Its Investing Membrane, Nucleus, And Nucleolus.

The Survival Or Preservation Of Certain Favoured Words In The Struggle For Existence Is Natural Selection.

Man Is Developed From An Ovule, About 125th Of An Inch In Diameter, Which Differs In No Respect From The Ovules Of Other Animals.

I Suppose You Are Two Fathoms Deep In Mathematics, And If You Are, Then God Help You. For So Am I, Only With This Difference: I Stick Fast In The Mud At The Bottom, And There I Shall Remain.

I Was A Young Man With Uninformed Ideas. I Threw Out Queries, Suggestions, Wondering All The Time Over Everything; And To My Astonishment The Ideas Took Like Wildfire. People Made A Religion Of Them.

Even People Who Aren’t Geniuses Can Outthink The Rest Of Mankind If They Develop Certain Thinking Habits.

I Am Sorry To Have To Inform You That I Do Not Believe In The Bible As A Divine Revelation, & Therefore Not In Jesus Christ As The Son Of God.

I Have Steadily Endeavored To Keep My Mind Free So As To Give Up Any Hypothesis, However Much Beloved (and I Cannot Resist Forming One On Every Subject), As Soon As The Facts Are Shown To Be Opposed To It.

If The Misery Of The Poor Be Caused Not By The Laws Of Nature, But By Our Institutions, Great Is Our Sin.

Jealousy Was Plainly Exhibited When I Fondled A Large Doll, And When I Weighed His Infant Sister, He Being Then 15? Months Old. Seeing How Strong A Feeling Of Jealousy Is In Dogs, It Would Probably Be Exhibited By Infants At Any Earlier Age Than Just Specified If They Were Tried In A Fitting Manner

Animals Manifestly Enjoy Excitement, And Suffer From Annul And May Exhibit Curiosity.

Delight Itself, However, Is A Weak Term To Express The Feelings Of A Naturalist.

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