Love is a little haven of refuge from the world.

I believe in using words, not fists. I believe in my outrage knowing people are living in boxes on the street. I believe in honesty. I believe in a good time. I believe in good food. I believe in sex.

Never try to discourage thinking, for you are sure to succeed.

(on A History of Western Philosophy) I was sometimes accused by reviewers of writing not a true history but a biased account of the events that I arbitrarily chose to write of. But to my mind, a man without a bias cannot write interesting history - if, indeed, such man exists.

Why is propaganda so much more successful when it stirs up hatred than when it tries to stir up friendly feeling?

Conquer the world by intelligence, and not merely by being slavishly subdued by the terror that comes from it.

I like mathematics because it is not human and has nothing particular to do with this planet or with the whole accidental universe - because, like Spinoza's God, it won't love us in return.