Multiply, Vary, Let The Strongest Live And

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.

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.‎

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

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.

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