What we've done all of these years is very simple, is use the little tool, which is ask three whys in a row. Because the first why you always have a good answer for. The second why, it starts getting difficult. By the third why, you don't really know why you're doing what you're doing.

And what happens for me is that I make a pot of beans on Sunday. And I also make some greens with chard, whatever I have available. And when I come to cook a meal or even to make myself breakfast, I may warm up some of those beans. I put a little tortilla right on the fire. I fill it up with the beans, maybe a little hot pepper, and I eat it. And that takes me exactly two minutes, three minutes, maybe. But it’s knowing how to cook. Those basic things have been taken away from us.

I, at first, thought I didn’t have a ritual, but then I remembered that I always get up and make a cup of coffee while it is still dark—it must be dark—and then I drink the coffee and watch the light come. And she said, “Well, that’s a ritual.” And I realized that for me this ritual comprises my preparation to enter a space that I can only call nonsecular … For me, light is the signal in the transition. It’s not being in the light, it’s being there before it arrives. It enables me, in some sense.

All my life, I've gone through life anticipating trouble. And here I am, well along on my eighty-fourth year, and like Epictetus, I've had a favored life. It didn't make me unhappy to anticipate trouble all the time and be ready to perform adequately if trouble came. It didn't hurt me at all. In fact, it helped me.

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.

So I find that teaching and the students keep life going, and I would never accept any position in which somebody has invented a happy solution for me where I don’t have to teach.  Never.

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.

The questions of the students are often the source of new research.  They often ask profound questions that I’ve thought about at times and then given up on, so to speak, for a while.  It wouldn’t do me any harm to think about them again and see if I can go any further now.  The students may not be able to see the thing I want to answer, or the subtleties I want to think about, but they remind me of a problem by asking questions in the neighborhood of that problem.  It’s not so easy to remind yourself of these things.

At Cornell, I’d work on preparing my courses, and I’d go over to the library a lot and read through the Arabian Nights and ogle the girls that would go by.  But when it came time to do some research, I couldn’t get to work.  I was a little tired; I was not interested; I couldn’t do research!  This went on for what I felt was a few years, but when I go back and calculate the timing, it couldn’t have been that long.  Perhaps nowadays I wouldn’t think it was such a long time, but then, it seemed to go on for a very long time.  I simply couldn’t get started on any problem: I remember writing one or two sentences about some problem in gamma rays and then I couldn’t go any further.  I was convinced that from the war and everything (the death of my wife) I had simply burned myself out.

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