If you have ambition, you might not achieve anything, but without ambition, you are almost certain not to achieve anything.

I have always believed the thesis that one's politics and the character of one's intellectual work are inseparable.

Without strong encryption, you will be spied on systematically by lots of people.

If you have ambition, you might not achieve anything, but without ambition, you are almost certain not to achieve anything.

I have been working on two problems for three years: one of them for 8 or 9 years, and one of them for 3, 4, 5 years.

I liked Berkeley tremendously, Berkeley was a very leftist campus. I came to love that city as much as I love Paris or the south of France or New York.

If you say to people that they, as a matter of fact, can't protect their conversations, in particular their political conversations, I think you take a long step toward making a transition from a free society to a totalitarian society.