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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.

-Charles Darwin

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I Fully Agree With

Charles Darwin

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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.

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After Five Years' Work I Allowed Myself To Speculate On The Subject, And Drew Up Some Short Notes; These I Enlarged In 1844 Into A Sketch Of The Conclusions, Which Then Seemed To Me Probable: From That Period To The Present Day I Have Steadily Pursued The Same Object. I Hope That I May Be Excused For Entering On These Personal Details, As I Give Them To Show That I Have Not Been Hasty In Coming To A Decision.‎

I Cannot See ... Evidence Of Design And Beneficence ... There Seems To Me Too Much Misery In The World.

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

We Can Allow Satellites, Planets, Suns, Universe, Nay Whole Systems Of Universes, To Be Governed By Laws, But The Smallest Insect, We Wish To Be Created At Once By Special Act.

Theory Of Evolution

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.

Ultimately A Highly Complex Sentiment, Having Its First Origin In The Social Instincts, Largely Guided By The Approbation Of Our Fellow-men, Ruled By Reason, Self-interest, And In Later Times By Deep Religious Feelings, Confirmed By Instruction And Habit, All Combined, Constitute Our Moral Sense Or Conscience.

A Mathematician Is A Blind Man In A Dark Room Looking For A Black Cat Which Isn't There.

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

Many Kinds Of Monkeys Have A Strong Taste For Tea, Coffee And Spirituous Liqueurs.

It Has Been A Bitter Mortification For Me To Digest The Conclusion That The "race Is For The Strong" And That I Shall Probably Do Little More But Be Content To Admire The Strides Others Made In Science.

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.

It Occurred To Me, In 1837, That Something Might Perhaps Be Made Of This Question (the Origin Of The Species) By Patiently Accumulating And Reflecting On All Sorts Of Facts Which Could Possibly Have Any Bearing On It

There Is No Fundamental Difference Between Humans And The Higher Mammalsin Their Mental Faculties

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

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.

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

The Very Essence Of Instinct Is That It's Followed Independently Of Reason.

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

Why Does Man Regret, Even Though He May Endeavour To Banish Any Such Regret, That He Has Followed The One Natural Impulse, Rather Than The Other; And Why Does He Further Feel That He Ought To Regret His Conduct? Man In This Respect Differs Profoundly From The Lower Animals.

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

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

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.

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.

At Some Future Period, Not Very Distant As Measured By Centuries, The Civilized Races Of Man Will Almost Certainly Exterminate, And Replace The Savage Races Throughout The World.

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

But Then With Me The Horrid Doubt Always Arises Whether The Convictions Of Man's Mind, Which Has Been Developed From The Mind Of The Lower Animals, Are Of Any Value Or At All Trustworthy. Would Any One Trust In The Convictions Of A Monkey's Mind, If There Are Any Convictions In Such A Mind?

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.

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

...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 & Believe What He Can.—

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

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.

Of All The Differences Between Man And The Lower Animals, The Moral Sense Or Conscience Is By Far The Most Important. This Sense, As Mackintosh Remarks, "has A Rightful Supremacy Over Every Other Principle Of Human Action"; It Is Summed Up In That Short But Imperious Word "ought," So Full Of High Significance. It Is The Most Noble Of All The Attributes Of Man, Leading Him Without A Moment's Hesitation To Risk His Life For That Of A Fellow-creature; Or After Due Deliberation, Impelled Simply By The Deep Feeling Of Right Or Duty, To Sacrifice It In Some Great Cause.

I Can Indeed Hardly See How Anyone Ought To Wish Christianity To Be True For If So The Plain Language Of The Text Seems To Show That The Men Who Do Not Believe, And This Would Include My Father, Brother And Almost All Of My Friends, Will Be Everlastingly Punished. And This Is A Damnable Doctrine.

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

I Have Been Speculating Last Night What Makes A Man A Discoverer Of Undiscovered Things. As Far As I Can Conjecture The Art Consists In Habitually Searching For The Causes And Meaning Of Everything Which Occurs.

An Agnostic Would Be The More Correct Description Of My State Of Mind.

Free Will Is To Mind What Chance Is To Matter.

The Love Of A Dog For His Master Is Notorious; In The Agony Of Death He Has Been Known To Caress His Master, And Everyone Has Heard Of The Dog Suffering Under Vivisection, Who Licked The Hand Of The Operator; This Man, Unless He Had A Heart Of Stone, Must Have Felt Remorse To The Last Hour Of His Life.

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.

Englishmen Rarely Cry, Except Under The Pressure Of The Acutest Grief; Whereas In Some Parts Of The Continent The Men Shed Tears Much More Readily And Freely.

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

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.

I Find In The Domestic Duck That The Bones Of The Wing Weigh Less And The Bones Of The Leg More, In Proportion To The Whole Skeleton, Than Do The Same Bones In The Wild Duck; And This Change May Be Safely Attributed To The Domestic Duck Flying Much Less, And Walking More, Than Its Wild Parents.

The Expression Often Used By Mr. Herbert Spencer Of The Survival Of The Fittest Is More Accurate, And Is Sometimes Equally Convenient.

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

Mr. J.s. Mill Speaks, In His Celebrated Work, "utilitarianism," Of The Social Feelings As A "powerful Natural Sentiment," And As "the Natural Basis Of Sentiment For Utilitarian Morality," But On The Previous Page He Says, "if, As Is My Own Belief, The Moral Feelings Are Not Innate, But Acquired, They Are Not For That Reason Less Natural." It Is With Hesitation That I Venture To Differ From So Profound A Thinker, But It Can Hardly Be Disputed That The Social Feelings Are Instinctive Or Innate In The Lower Animals; And Why Should They Not Be So In Man?

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

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.

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.

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

But I Own That I Cannot See As Plainly As Others Do, And I Should Wish To Do, Evidence Of Design And Beneficence On All Sides Of Us. There Seems To Me Too Much Misery In The World. I Cannot Persuade Myself That A Beneficent And Omnipotent God Would Have Designedly Created That A Cat Should Play With Mice.

The Most Powerful Natural Species Are Those That Adapt To Environmental Change Without Losing Their Fundamental Identity Which Gives Them Their Competitive Advantage.

... 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 Believe There Exists, & I Feel Within Me, An Instinct For The Truth, Or Knowledge Or Discovery, Of Something Of The Same Nature As The Instinct Of Virtue, & That Our Having Such An Instinct Is Reason Enough For Scientific Researches Without Any Practical Results Ever Ensuing From Them.

[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].

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

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.

Thomson's Views On The Recent Age Of The World Have Been For Some Time One Of My Sorest Troubles.

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.

Man, Wonderful Man, Must Collapse, Into Nature's Cauldron, He Is No Deity, He Is No Exception.

Only Picture To Yourself A Nice Soft Wife On A Sofa With Good Fire, & Books & Music.

The Assumed Instinctive Belief In God Has Been Used By Many Persons As An Argument For His Existence. But This Is A Rash Argument, As We Should Thus Be Compelled To Believe In The Existence Of Many Cruel And Malignant Spirits, Only A Little More Powerful Than Man; For The Belief In Them Is Far More General Than In A Beneficent Deity.

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

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.

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

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

The Loss Of These Tastes [for Poetry And Music] Is A Loss Of Happiness, And May Possibly Be Injurious To The Intellect, And More Probably To The Moral Character, By Enfeebling The Emotional Part Of Our Nature.

It Is Interesting To Contemplate An Entangled Bank Clothed With Many Plants Of Many Kinds With Birds Singing On The Bushes, With Various Insects Flitting About And With Worms Crawling Through The Damp Earth And To Reflect That These Elaborately Constructed Forms So Different From Each Other And Dependent On Each Other And So Complex A Manner Have All Been Produced By Laws Acting Around Us.

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.

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.

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

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".

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

I Long To Set Foot Where No Man Has Trod Before.

Intelligence Is Based On How Efficient A Species Became At Doing The Things They Need To Survive.

The Age-old And Noble Thought Of 'i Will Lay Down My Life To Save Another,' Is Nothing More Than Cowardice.

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 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.

I Have At Least, As I Hope, Done Good Service In Aiding To Overthrow The Dogma Of Separate Creations.

You Ask About My Opinion On Vivisection. I Quite Agree That It Is Justifiable For Real Investigations On Physiology; But Not For Mere Damnable And Detestable Curiosity.

At Some Future Period, Not Very Distant As Measured By Centuries, The Civilised Races Of Man Will Almost Certainly Exterminate And Replace Throughout The World The Savage Races. At The Same Time The Anthropomorphous Apes, As Professor Schaaffhausen Has Remarked, Will No Doubt Be Exterminated. The Break Will Then Be Rendered Wider, For It Will Intervene Between Man In A More Civilised State As We May Hope, Than The Caucasian And Some Ape As Low As A Baboon, Instead Of As At Present Between The Negro Or Australian And The Gorilla.

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.

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

A Man's Friendships Are One Of The Best Measures Of His Worth.

In The Distant Future I See Open Fields For Far More Important Researches. Psychology Will Be Based On A New Foundation, That Of The Necessary Acquirement Of Each Mental Power And Capacity By Gradation. Light Will Be Thrown On The Origin Of Man And His History.

Any One Whose Disposition Leads Him To Attach More Weight To Unexplained Difficulties Than To The Explanation Of Facts Will Certainly Reject My Theory.

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.

The World Will Not Be Inherited By The Strongest, It Will Be Inherited By Those Most Able To Change.

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.

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.

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.

The Presence Of A Body Of Well-instructed Men, Who Have Not To Labor For Their Daily Bread, Is Important To A Degree Which Cannot Be Overestimated; As All High Intellectual Work Is Carried On By Them, And On Such Work Material Progress Of All Kinds Mainly Depends, Not To Mention Other And Higher Advantages.

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

A Surprising Number [of Novels] Have Been Read Aloud To Me, And I Like All If Moderately Good, And If They Do Not End Unhappily-against Which A Law Ought To Be Passed.

And Hail Their Queen, Fair Regent Of The Night.

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.

But When On Shore, & Wandering In The Sublime Forests, Surrounded By Views More Gorgeous Than Even Claude Ever Imagined, I Enjoy A Delight Which None But Those Who Have Experienced It Can Understand.

As Many More Individuals Of Each Species Are Born Than Can Possibly Survive; And As, Consequently, There Is A Frequently Recurring Struggle For Existence, It Follows That Any Being, If It Vary However Slightly In Any Manner Profitable To Itself, Under The Complex And Sometimes Varying Conditions Of Life, Will Have A Better Chance Of Surviving, And Thus Be Naturally Selected. From The Strong Principle Of Inheritance, Any Selected Variety Will Tend To Propagate Its New And Modified Form.

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 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.

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

It Is Not The Strongest Of The Species That Survives, Nor The Most Intelligent That Survives. It Is The One That Is The Most Adaptable To Change, That Lives Within The Means Available And Works Co-operatively Against Common Threats.

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

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.

[alexander Von Humboldt Was The] Greatest Scientific Traveller Who Ever Lived.

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

I Am Aware That The Assumed Instinctive Belief In God Has Been Used By Many Persons As An Argument For His Existence. The Idea Of A Universal And Beneficent Creator Does Not Seem To Arise In The Mind Of Man, Until He Has Been Elevated By Long-continued Culture.

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!

What A Book A Devil's Chaplain Might Write On The Clumsy, Wasteful, Blundering, Low, And Horribly Cruel Work Of Nature!

A Bad Earthquake At Once Destroys The Oldest Associations: The World, The Very Emblem Of All That Is Solid, Has Moved Beneath Our Feet Like A Crust Over A Fluid; One Second Of Time Has Conveyed To The Mind A Strange Idea Of Insecurity, Which Hours Of Reflection Would Never Have Created.

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.

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.

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

He Who Understands Baboon Would Do More Towards Metaphysics Than Locke.

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

Owing To This Struggle For Life, Any Variation, However Slight And From Whatever Cause Proceeding, If It Be In Any Degree Profitable To An Individual Of Any Species, In Its Infinitely Complex Relationship To Other Organic Beings And To External Nature, Will Tend To The Preservation Of That Individual, And Will Generally Be Inherited By Its Offspring.

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.

The Plow Is One Of The Most Ancient And Most Valuable Of Man's Inventions; But Long Before He Existed The Land Was In Fact Regularly Plowed, And Still Continues To Be Thus Plowed By Earthworms. It May Be Doubted Whether There Are Many Other Animals Which Have Played So Important A Part In The History Of The World, As Have These Lowly Organized Creatures.

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

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.

... Not One Living Species Will Transmit Its Unaltered Likeness To A Distant Futurity.

Origin Of Species

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.

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.

It May Be Doubted Whether Any Character Can Be Named Which Is Distinctive Of A Race And Is Constant.

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.

I Shall Always Feel Respect For Every One Who Has Written A Book, Let It Be What It May, For I Had No Idea Of The Trouble Which Trying To Write Common English Could Cost One—and Alas There Yet Remains The Worst Part Of All Correcting The Press.

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.

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

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

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.

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.

As Some Of The Lowest Organisms, In Which Nerves Cannot Be Detected, Are Capable Of Perceiving Light, It Does Not Seem Impossible That Certain Sensitive Elements In Their Sarcode Should Become Aggregated And Developed Into Nerves, Endowed With This Special Sensibility.

I Ought, Or I Ought Not, Constitute The Whole Of Morality.

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.

I Hate A Barnacle As No Man Ever Did Before, Not Even A Sailor In A Slow-sailing Ship.

So In Regard To Mental Qualities, Their Transmission Is Manifest In Our Dogs, Horses And Other Domestic Animals. Besides Special Tastes And Habits, General Intelligence, Courage, Bad And Good Tempers. Etc., Are Certainly Transmitted.

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?

Animals, Whom We Have Made Our Slaves, We Do Not Like To Consider Our Equal.

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

Origin Of Species

A Republic Cannot Succeed, Till It Contains A Certain Body Of Men Imbued With The Principles Of Justice And Honour.

It Is No Valid Objection That Science As Yet Throws No Light On The Far Higher Problem Of The Essence Or Origin Of Life. Who Can Explain Gravity? No One Now Objects To Following Out The Results Consequent On This Unknown Element Of Attraction.

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

When The Views Entertained In This Volume On The Origin Of Species, Or When Analogous Views Are Generally Admitted, We Can Dimly Forsee That There Will Be A Considerable Revolution In Natural History.

The More One Thinks, The More One Feels The Hopeless Immensity Of Man's Ignorance.

If Man Had Not Been His Own Classifier, He Would Never Have Thought Of Founding A Separate Order For His Own Reception.

As Man Advances In Civilization, And Small Tribes Are United Into Larger Communities, The Simplest Reason Would Tell Each Individual That He Ought To Extend His Social Instincts And Sympathies To All Members Of The Same Nation, Though Personally Unknown To Him. This Point Being Once Reached, There Is Only An Artificial Barrier To Prevent His Sympathies Extending To The Men Of All Nations And Races.

For I Am Well Aware That Scarcely A Single Point Is Discussed In This Volume On Which Facts Cannot Be Adduced, Often Apparently Leading To Conclusions Directly Opposite To Those At Which I Have Arrived. A Fair Result Can Be Obtained Only By Fully Stating And Balancing The Facts And Arguments On Both Sides Of Each Question.

I Liked The Thought Of Being A Country Clergyman. Accordingly I Read With Care Pearson On The Creed And A Few Other Books On Divinity; And As I Did Not Then In The Least Doubt The Strict And Literal Truth Of Every Word In The Bible, I Soon Persuaded Myself That Our Creed Must Be Fully Accepted.

The Limit Of Man S Knowledge In Any Subject Possesses A High Interest Which Is Perhaps Increased By Its Close Neighbourhood To The Realms Of Imagination.

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

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.

In My Simplicity, I Remember Wondering Why Every Gentleman Did Not Become An Ornithologist.

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.

Great Is The Power Of Steady Misrepresentation; But The History Of Science Shows That Fortunately This Power Does Not Long Endure.

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

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.

The Main Conclusion Here Arrived At ... Is That Man Is Descended From Some Less Highly Organized Form.

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.

We Fancied Even That The Bushes Smelt Unpleasantly.

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

As Natural Selection Acts By Competition, It Adapts The Inhabitants Of Each Country Only In Relation To The Degree Of Perfection Of Their Associates; So That We Need Feel No Surprise At The Inhabitants Of Any One Country, Although On The Ordinary View Supposed To Have Been Specially Created And Adapted For That Country, Being Beaten And Supplanted By The Naturalised Productions From Another Land.

Nothing Could Have Been Worse For The Development Of My Mind Than Dr. Butler's School, As It Was Strictly Classical, Nothing Else Being Taught, Except A Little Ancient Geography And History. The School As A Means Of Education To Me Was Simply A Blank. During My Whole Life I Have Been Singularly Incapable Of Mastering Any Language. Especial Attention Was Paid To Versemaking, And This I Could Never Do Well. I Had Many Friends, And Got Together A Good Collection Of Old Verses, Which By Patching Together, Sometimes Aided By Other Boys, I Could Work Into Any Subject.

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.'

Multiply, Vary, Let The Strongest Live And The Weakest Die.

Origin Of Species

Natural Selection

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

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.

Some Call It Evolution, And Others Call It God.

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.

Man Selects Only For His Own Good: Nature Only For That Of The Being Which She Tends.

Origin Of Species

I Worked On True Baconian Principles, And Without Any Theory Collected Facts.

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.

We Feel Surprise When Travellers Tell Us Of The Vast Dimensions Of The Pyramids And Other Great Ruins, But How Utterly Insignificant Are The Greatest Of These, When Compared To These Mountains Of Stone Accumulated By The Agency Of Various Minute And Tender Animals!

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

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.

I Have Watched How Steadily The General Feeling, As Shown At Elections, Has Been Rising Against Slavery. What A Proud Thing For England If She Is The First European Nation Which Utterly Abolishes It! I Was Told Before Leaving England That After Living In Slave Countries All My Opinions Would Be Altered; The Only Alteration I Am Aware Of Is Forming A Much Higher Estimate Of The Negro Character.

I Can Remember The Very Spot In The Road, Whilst In My Carriage, When To My Joy The Solution Occurred To Me.

Daily It Is Forced Home On The Mind Of The Biologist That Nothing, Not Even The Wind That Blows, Is So Unstable As The Level Of The Crust Of This Earth.

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.

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 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.

It's An Awful Stretcher To Believe That A Peacock's Tail Was Thus Formed But ... Most People Just Don't Get It - I Must Be A Very Bad Explainer

Life Is Nearly Over With Me. I Have Taken No Pains About My Style Of Writing.

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

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.

I See No Good Reasons Why The Views Given In This Volume Should Shock The Religious Views Of Anyone.

Freedom Of Thought Is Best Promoted By The Gradual Illumination Of Men’s Minds Which Follows From The Advance Of Science.

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

How Paramount The Future Is To The Present When One Is Surrounded By Children.

Music Was Known And Understood Before Words Were Spoken.

It Is Absurd To Talk Of One Animal Being Higher Than Another...we Consider Those, Where The Intellectual Faculties Most Developed As The Highest. - A Bee Doubtless Would [use] ... Instincts As A Criteria.

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.

The School As A Means Of Education To Me Was Simply A Blank.

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.

It Is Like Confessing To A Murder.

Positive Atheism

...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.

Only The Fittest Will Survive.

It Is So Easy To Hide Our Ignorance Under Such Expressions As The Plan Of Creation Or Unity Of Design, Etc., And To Think That We Give An Explanation When We Only Restate A Fact.

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.

Our Ancestor Was An Animal Which Breathed Water, Had A Swim-bladder, A Great Swimming Tail, An Imperfect Skull & Undoubtedly Was An Hermaphrodite! Here Is A Pleasant Genealogy For Mankind.

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

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