One very important aspect of string theory is definitely testable. That was the prediction of supersymmetry, which emerged from string theory in the early '70s.

There was a long history of speculation that in quantum gravity, unlike Einstein's classical theory, it might be possible for the topology of spacetime to change.

There is a difference between knowing what is true and knowing why it is true

We know a lot of things, but what we don't know is a lot more.

I have a tendency, more than most other physicists, to try to figure out everything all at once, before I publish. And even to try to figure out everything in my head, without pencil and paper.

Im actually, for the most part, a complete agnostic politically.

So when you ask me how string theory might be tested, I can tell you what's likely to happen at accelerators or some parts of the theory that are likely to be tested.

I have a much easier time imagining how we would understand the big bang, even though we can't do it yet, than I can imagine understanding consciousness.

As of now, string theorists have no explanation of why there are three large dimensions as well as time, and the other dimensions are microscopic. Proposals about that have been all over the map.

String theory is an attempt at a deeper description of nature by thinking of an elementary particle not as a little point but as a little loop of vibrating string.

M stands for Magic, Mystery, or Matrixaccording to taste

The first person who is on your mind the moment you open your eyes after a long sleep is the reason either of your happiness or pain.

The artist secretes nostalgia around life.

All of us recruits are equal in the eyes of the Army: low as you can go.

The main reason Santa is so jolly is because he knows where all the bad girls live.

The avant-garde and the beatniks share in the function of entertaining without endangering the good conscience of the men of good will.

I toured Ontario in the winter of '48, in a touring company of The Drunkard, in which I played the bartender.

Some are nice and some aren't. Some are smart, and others are about as bright as a wet match in a dark cave. In other words, pretty normal.

I think music should be experienced by people all ages.

If more women want to be a part of the computer industry today, they have to do more to put themselves there. Nobody is keeping them out.

The poets get a quizzical ahem. They reflect time, I am the very ticking.