As finite creatures who think and feel, we can create islands of meaning in the sea of information.

It's not going to be just humans colonizing space, it's going to be life moving out from the Earth, moving it into its kingdom. And the kingdom of life, of course, is going to be the universe.

The question that will decide our destiny is not whether we shall expand into space. It is: shall we be one species or a million? A million species will not exhaust the ecological niches that are awaiting the arrival of intelligence.

I like people who are working on practical things and who are working in teams. It's not so important to get the glory. It's much more important to get something that works. It's a better way to live.

Some things go better than you expected, other things go worse, so I'm... I think the only sensible thing is just to wait and see and what I'm doing when I'm writing books - I'm not doing science so much anymore.

One factor that has remained constant through all the twists and turns of the history of physical science is the decisive importance of the mathematical imagination.

The more I examine the universe and study the details of its architecture, the more evidence I find that the universe in some sense must have known that we were coming.