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

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

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

That's all it takes, one drop of fear to curdle love into hate.

DISOBEDIENCE, n. The silver lining to the cloud of servitude.

I haven't reached nirvana yet, but I've been to Detroit.

He that makes his bed ill, lies there.

I'm never running for office. I love being able to speak to members of Congress or members of the Senate and floating on either side, because it takes all of us. It's going to take both of them.

I've been fortunate over my career to make a little history on the 16th hole at Augusta National.

If singing were a feeling it would be this, this light, this lifting, like laughing.

If we are to know the Lord, we must go to Him. Listen to Him in silence before the Tabernacle and approach Him in the Sacraments.

The more hedonistic you were, the better...I very much subscribed to that as a young artist.

Those friends thou hast, and their adoption tried, Grapple them to thy soul with hoops of steel; But do not dull thy palm with entertainment Of each new-hatch'd, unfledg'd comrade.