Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young.

It is well enough that people of the nation do not understand our banking and monetary system, for if they did, I believe there would be a revolution before tomorrow morning.

If you think you can do a thing or think you can't do a thing, you're right.

If everyone is moving forward together, then success takes care of itself.

When everything seems to be going against you, remember that the airplane takes off against the wind, not with it.

Thinking is the hardest work there is, which is probably the reason why so few engage in it.

That's the trouble with the world. We all despise ourselves.

Well done is better than well said.

The only true voyage, the only bath in the Fountain of Youth, would be not to visit strange lands but to possess other eyes, to see the universe through the eyes of another, of a hundred others, to see the hundred universes that each of them sees, that each of them is.

Chastity: the most unnatural of the sexual perversions.

Be kind, for everyone you meet is fighting a hard battle.

I don’t want a whole dessert; let’s just get two spoons.

I always felt that the great high privilege, relief and comfort of friendship was that one had to explain nothing.

The first canon of my religion is that you shouldn't try to convince anybody to believe like you do.

If stupidity got us into this mess, then why can’t it get us out?