It Is A Fatal Fault To Reason

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.

What Can Be More Curious Than That The Hand Of A Man, Formed For Grasping, That Of A Mole For Digging, The Leg Of The Horse, The Paddle Of The Porpoise, And The Wing Of The Bat, Should All Be Constructed On The Same Pattern?

...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.

... If Variations Useful To Any Organic Being Do Occur, Assuredly Individuals Thus Characterized Will Have The Best Chance Of Being Perserved In The Struggle For Life; And From The Strong Principle Of Inheritance They Will Tend To Produce Offsping Similarly Characterized. This Principle Of Preservation, I Have Called, For The Sake Of Brevity, Natural Selection.

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