Charles Darwin

The highest possible stage in moral culture is when we recognize that we ought to control our thoughts. ”

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

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

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

What a book a devil's chaplain might write on the clumsy, wasteful, blundering, low, and horribly cruel work of nature! ”

Ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science. ”

How paramount the future is to the present when one is surrounded by children. ”

False facts are highly injurious to the progress of science, for they often endure long; but false views, if supported by some evidence, do little harm, for every one takes a salutary pleasure in proving their falseness. ”

My mind seems to have become a kind of machine for grinding general laws out of large collections of facts. ”

I am turned into a sort of machine for observing facts and grinding out conclusions. ”