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A man who dares to waste one hour of time has not discovered the value of life.
A man's friendships are one of the best measures of his worth.
A moral being is one who is capable of reflecting on his past actions and their motives - of approving of some and disapproving of others.
A scientific man ought to have no wishes, no affections, - a mere heart of stone.
An American monkey, after getting drunk on brandy, would never touch it again, and thus is much wiser than most men.... (more Charles Darwin quotes)
| The Voyage of the Beagle: Charles Darwin's Journal of Researches (Penguin Classics) by Charles Darwin, Janet Browne, and Michael Neve | |
| The Reluctant Mr. Darwin: An Intimate Portrait of Charles Darwin and the Making of His Theory of Evolution (Great Discoveries) by David Quammen | |
| Who Was Charles Darwin? (Who Was...?) by Deborah Hopkinson and Nancy Harrison |