“To be without some of the things you want is an indispensable part of happiness.”

It has been said that man is a rational animal. All my life I have been searching for evidence that could support this.

Anything you’re good at contributes to happiness.

We love our habits more than our income, often more than our life.

Sin is geographical.

The good life is inspired by love and guided by knowledge.

Mathematics, rightly viewed, possesses not only truth but supreme beauty – a beauty cold and austere.

Extreme hopes are born from extreme misery.

Science may set limits to knowledge, but should not set limits to imagination.

Machines have altered our way of life, but not our instincts. Consequently, there is maladjustment.

Every man, wherever he goes, is encompassed by a cloud of comforting convictions, which move with him like flies on a summer day.

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

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.

The most savage controversies are those about matters as to which there is no good evidence either way.

This has been my life. I have found it worth living, and would gladly live it again if the chance were offered to me.

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

Remember your humanity, and forget the rest.