No other planet in the solar system is a suitable home for human beings; it's this world or nothing. That's a very powerful perception.

True praise comes often even to the lowly; false praise only to the strong.

I was called really horrible, profane names very loudly in front of huge crowds of people, and my schoolwork suffered at one point.

The unexamined life is not worth living.

You can find women who have never had an affair, but it is hard to find a woman who has had just one.