The fact that I don't have any particular need for religion doesn't mean that I have a need to cast religion aside the way some of my colleagues do.

One of the wonders of science is that it is completely universal. It crosses national boundaries with total ease.

When I give this talk to a physics audience, I remove the quotes from my 'Theorem'.

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.

I wouldn't say that The Fabric of the Cosmos is a book on cosmology. Cosmology certainly plays a big part, but the major theme is our ever-evolving understanding of space and time, and what it all means for our sense of reality.

The pinpoints of starlight we see with the naked eye are photons that have been streaming toward us for a few years or a few thousand.

When kids look up to great scientists the way they do to great musicians and actors, civilization will jump to the next level