I Have Been Speculating Last Night What

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

After My Return To England It Appeared To Me That By Following The Example Of Lyell In Geology, And By Collecting All Facts Which Bore In Any Way On The Variation Of Animals And Plants Under Domestication And Nature, Some Light Might Perhaps Be Thrown On The Whole Subject.

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.

Whoever Is Led To Believe That Species Are Mutable Will Do Good Service By Conscientiously Expressing His Conviction; For Only Thus Can The Load Of Prejudice By Which This Subject Is Overwhelmed Be Removed.

...one Doubts Existence Of Free Will [because] Every Action Determined By Heredity, Constitution, Example Of Others Or Teaching Of Others." "this View Should Teach One Profound Humility, One Deserves No Credit For Anything...nor Ought One To Blame Others.