Intelligence is the ability to adapt to change.

You cannot understand the glories of the universe without believing there is some Supreme Power behind it.

I think the universe was spontaneously created out of nothing, according to the laws of science. It has no beginning and no end.

Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it.

We waste time, so you don't have to.

I would like nuclear fusion to become a practical power source. It would provide an inexhaustible supply of energy, without pollution or global warming.

I think the human race has no future if it doesn't go into space.