When you know the answer you want, it is often all too easy to figure out a way of getting it.

...quantum mechanics—the physics of our world—requires that you hold such pedestrian complaints in abeyance.

Gravity is matter’s sugar daddy.

For me it's been very exciting to contribute to the public's understanding of how rich and wondrous science is.

There are many of us thinking of one version of parallel universe theory or another. If it's all a lot of nonsense, then it's a lot of wasted effort going into this far-out idea. But if this idea is correct, it is a fantastic upheaval in our understanding.

No matter how hard you try to teach your cat general relativity, you're going to fail.

We do not know whether there are extra dimensions or multiverse. Let's go forward with the possible ideas that come out of the mathematics. It's hard for us to imagine a universe that would have no time at all.