Every calling is great when greatly pursued.

Every now and then a man's mind is stretched by a new idea or sensation, and never shrinks back to its former dimensions.

To be civilized is to be potentially master of all possible ideas, and that means that one has got beyond being shocked, although one preserves one's own moral aesthetic preferences.

I have no respect for the passion of equality, which seems to me merely idealizing envy - I don't disparage envy, but I don't accept it as legitimately my master.

All my life's about is cracking up people and them cracking me up and trying not to think about dying. That doesn't cost very much money.

I don't know what to do with it. I'm very fortunate to have it, and it gives you room to maneuver. But the main thing about having money is it means you don't have to worry about it. And that for me is a lovely thing. It's not for fast cars and hookers.

You need a president whom you can trust, someone who will not steal your money, a president who is sincere, brave and just.

There are a lot of billionaires in Silicon Valley, but in the end, we are all heading to the same place. If given the choice between making a lot of money or finding a way to make people live longer, what do you choose?