We seem gradually to be groping toward an understanding of the world of subatomic particles, but we really do not know how far we have yet to go in this task.

The philosophical question before us is, when we make an observation of our track in the past, does the result of our observation become real in the same sense that the final state would be defined if an outside observer were to make the observation?

If we have an atom that is in an excited state and so is going to emit a photon, we cannot say when it will emit the photon. It has a certain amplitude to emit the photon at any time, and we can predict only a probability for emission; we cannot predict the future exactly.

In talking about the impact of ideas in one field on ideas in another field, one is always apt to make a fool of oneself.

I am of the school that believes, for the most part, that gays are born and not made. That is, I believe - and there appears to be significant scientific evidence to back me up - that there is a genetic predisposition to be gay.

An AI utopia is a place where people have income guaranteed because their machines are working for them. Instead, they focus on activities that they want to do, that are personally meaningful like art or, where human creativity still shines, in science.

It is wrong to think that the task of physics is to find out how Nature is. Physics concerns what we say about Nature.

I look at the artists as mini media companies, like if Beyonce is ESPN and Lady Gaga is Discovery.