...i Feel Most Deeply That The Whole

I Have Called This Principle, By Which Each Slight Variation, If Useful, Is Preserved, By The Term Of Natural Selection.

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.

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.

If I Had Not Been So Great An Invalid, I Should Not Have Done So Much As I Have Accomplished.

A Man Who Dares To Waste One Hour Of Time Has Not Discovered The Value Of Life.