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

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.

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.

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.

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

People who call themselves supporters of Israel are actually supporters of its moral degeneration and ultimate destruction.

Justice. I've heard that word. I tried it out. I wrote it down. I wrote it down several times and always it looked like a damn cold lie to me. There is no justice.

In Damascus:poems become diaphanousThey’re neither sensualnor intellectualthey are what echo saysto echo . . .

Funny how a melody sounds like a memory.

I'd really want to - just from my own experience as an artist working with a writer, I'd want to do everything I could to tailor it to the artist I was working with.

Frivolity is the species' refusal to suffer.

Faith is a kind of immune system filtering out fears that otherwise would paralyze all activity.

I'll be sober ten years and married nine soon.

Now I have the pawn and the compensation.

I didn't know who I was and I didn't know if what was in me was any good. But my parents taught me to believe in myself and to work until something happens.