By the way, most of the light that comes from the sun is green.

I like to regard myself as someone who's capable of critical thought, that is to say, who can evaluate claims.

The future of commerce is going to be all electronic. The gold standard was a fine idea, but electronic changes of funds and credits will be the future.

If we raise a generation of students who dont believe in the process of science, who think everything that weve come to know about nature and the universe can be dismissed by a few sentences translated into English from some ancient text, youre not going to continue to innovate.

There really is no such thing as race. We all came from Africa. We are all of the same stardust. We are all going to live and die on the same planet, a Pale Blue Dot in the vastness of space. We have to work together.

Religion is a completely different thing from the claim that the Earth is six thousand years old. That's just crazy.

To leave the world better than you found it, sometimes you have to pick up other people's trash.