You are all stardust.

For many, to live in a universe that may have no purpose, and no creator, is unthinkable.

Every atom in your body came from a star that exploded. And the atoms in your left hand probably came from a different star than your right hand. It really is the most poetic thing I know about physics: you are all stardust.

People are interested in science, but they don't always know they're interested in science, and so I try to find a way to get them interested.

A truly open mind means forcing our imaginations to conform to the evidence of reality, and not vice versa.

Empty space is a boiling, bubbling brew of virtual particles that pop in and out of existence in a time scale so short that you can't even measure them.

Metaphysical speculation is independent of the physical validity of the Big Bang itself and is irrelevant to our understanding of it.