The belief in a supernatural source of evil is not necessary; men alone are quite capable of every wickedness.

You can't breathe dead hippo waking, sleeping, and eating, and at the same time keep your precarious grip on existence.

A task, any task, undertaken in an adventurous spirit acquires the merit of romance.

Do not talk to me of Archimedes' lever. He was an absent-minded person with a mathematical imagination. Mathematics commands my respect, but I have no use for engines. Give me the right word and the right accent and I will move the world.

I like what is in the work -- the chance to find yourself.

I have a voice, too, and for good or evil mine is the speech that cannot be silenced

Some great men owe most of their greatness to the ability of detecting in those they destine for their tools the exact quality of strength that matters for their work.