Men marry women with the hope they will never change. Women marry men with the hope they will change. Invariably they are both disappointed.

I cannot then believe in this concept of an anthropomorphic God who has the powers of interfering with these natural laws. As I said before, the most beautiful and most profound religious emotion that we can experience is the sensation of the mystical. And this mysticality is the power of all true science.

If people would only talk about what they understood, Earth would be a very quiet place.

I came to America because of the great, great freedom which I heard existed in this country. I made a mistake in selecting America as a land of freedom, a mistake I cannot repair in the balance of my lifetime.

The economists will have to revise their theories of value.

When I was still a rather precocious young man, I already realized most vividly the futility of the hopes and aspirations that most men pursue throughout their lives.

There's no question dolphins are smarter than humans as they play more.