Charles Darwin

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

The plow is one of the most ancient and most valuable of man's inventions; but long before he existed the land was in fact regularly plowed, and still continues to be thus plowed by earthworms. It may be doubted whether there are many other animals which have played so important a part in the history of the world, as have these lowly organized creatures.

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

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.

Every new body of discovery is mathematical in form, because there is no other guidance we can have.

Mathematics seems to endow one with something like a new sense.

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

If I had my life to live over again, I would have made a rule to read some poetry and listen to some music at least once a week; for perhaps the parts of my brain now atrophied would have thus been kept active through use. The loss of these tastes is a loss of happiness, and may possibly be injurious to the intellect, and more probably to the moral character, by enfeebling the emotional part of our nature.

And hail their queen, fair regent of the night.

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