Courage is not simply one of the virtues, but the form of every virtue at the testing point.

After all, science is essentially international, and it is only through lack of the historical sense that national qualities have been attributed to it.

There is no limit to the amount of good you can do if you don't care who gets the credit.

If we all worked on the assumption that what is accepted as true is really true, there would be little hope of advance.

Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

I do not argue with obstinate men. I act in spite of them.

Work is the rent you pay for the room you occupy on earth.

Common sense is the most widely shared commodity in the world, for every man is convinced that he is well supplied with it.

True valor lies between cowardice and rashness.

Those who hammer their guns into plows, will plow for those who do not.

Science is not only compatible with spirituality; it is a profound source of spirituality.

The two offices of memory are collection and distribution.

Usually when people are sad, they don't do anything. They just cry over their condition. But when they get angry, they bring about a change.

All battles are fought by scared men who'd rather be some place else.

Freedom lies in being bold.

Anybody who watches three games of football in a row should be declared brain dead.

Being unwanted, unloved, uncared for, forgotten by everybody, I think that is a much greater hunger, a much greater poverty than the person who has nothing to eat.

At the heart of all beauty lies something inhuman.

I've been looking for a girl like you - not you, but a girl like you.

It's better to be unhappy alone than unhappy with someone.

All men are prepared to accomplish the incredible if their ideals are threatened.