So I decided I was going to invest my time. I spent Monday through Thursday at Frito-Lay, commuting from New York to Texas. Then Friday, Saturday and Sunday, I did my regular job in New York. It was an incredible commitment of time but it was an amazing developmental experience. It was challenging, broadening, and helped me reach the position I have today.

My training took seven years. I didn’t learn how to make sushi for the first three years. I only got two days off a month, and slept on the restaurant floor. But I loved the job. I’d go to the fish market every morning. I got to open the restaurant and see the customers. I’d watch my mentor making sushi and would copy him under the table, practising with my fingers.

Of all the gifts that tennis has given me over the years, the greatest, without a doubt, has been the people I've met along the way: my friends, my competitors, and most of all the fans who give the sport its life.

we should invest the majority of our wealth the same way we are investing the majority of our time- by helping to improve people's lives.

It was a brilliant idea: You have no responsibility to live up to what other people think you ought to accomplish.  I have no responsibility to be like they expect me to be.

We'd walk in the canyons, and we'd often walk with Bethe, and Von Neumann, and Bacher. It was a great pleasure.

The first principle is that you must not fool yourself—and you are the easiest person to fool. So you have to be very careful about that. After you've not fooled yourself, it's easy not to fool other scientists. You just have to be honest in a conventional way after that.

It is necessary, I believe, to accept this idea, not only for science, but also for other things; it is of great value to acknowledge ignorance.  It is a fact that when we make decisions in our life we don't necessarily know that we are making them correctly; we only think that we are doing the best we can – and that is what we should do.

For example, I was a little surprised when I was talking to a friend who was going to go on the radio. He does work on cosmology and astronomy, and he wondered how he would explain what the applications of this work were. "Well," I said, "there aren't any." He said, "Yes, but then we won't get support for more research of this kind." I think that's kind of dishonest. If you're representing yourself as a scientist, then you should explain to the layman what you're doing—and if they don't want to support you under those circumstances, then that's their decision.

the colonel said I shouldn't tell them how the neutrons work and all the details because we want to keep things separate, so just tell them what to do to keep it safe.