You can be only a modest distance away from the gravity brane, and gravity will be incredibly weak.

When people try to use religion to address the natural world, science pushes back on it, and religion has to accommodate the results. Beliefs can be permanent, but beliefs can also be flexible. Personally, if I find out my belief is wrong, I change my mind. I think that's a good way to live.

Speculation and the exploration of ideas beyond what we know with certainty are what lead to progress.

An almost indispensable skill for any creative person is the ability to pose the right questions. Creative people identify promising, exciting, and, most important, accessible routes to progress - and eventually formulate the questions correctly.

I'm not creating the universe. I'm creating a model of the universe, which may or may not be true.

Scientists actively approach the door to knowledge—the boundary of the domain of what we know. We question and explore and we change our views when facts and logic force us to do so. We are confident only in what we can verify through experiments or in what we can deduce from experimentally confirmed hypotheses.

One of the nice things about math and science is it’s obvious, you get the answer or you don’t get the answer.