Charles Darwin

The mystery of the beginning of all things is insoluble by us; and I for one must be content to remain an agnostic.

To kill an error is as good a service as, and sometimes even better than, the establishing of a new truth or fact.

A man's friendships are one of the best measures of his worth.

An American monkey, after getting drunk on brandy, would never touch it again, and thus is much wiser than most men.

I have called this principle, by which each slight variation, if useful, is preserved, by the term of Natural Selection.

I love fools' experiments. I am always making them.

If the misery of the poor be caused not by the laws of nature, but by our institutions, great is our sin.

We must, however, acknowledge, as it seems to me, that man with all his noble qualities... still bears in his bodily frame the indelible stamp of his lowly origin.

In the long history of humankind (and animal kind, too) those who learned to collaborate and improvise most effectively have prevailed.

A man who dares to waste one hour of time has not discovered the value of life.