If you could meet your grandkids as elderly citizens in the year 2100 … you would view them as being, basically, Greek gods… that's where we're headed.

Beyond work and love, I would add two other ingredients that give meaning to life. First, to fulfill whatever talents we are born with. However blessed we are by fate with different abilities and strengths, we should try to develop them to the fullest, rather than allow them to atrophy and decay. ... Second, we should try to leave the world a better place than when we entered it.

Some people are a little bit afraid about the future because they see all these gadgets and gizmos coming down the pike and they think they're too old to learn all this new stuff. But eventually they begin to realize, 'Hey, some of this stuff is useful.'

I would hope that the publicity around the Higgs boson would increase the public awareness of physics and cosmology.

Growing new organs of the body as they wear out, extending the human lifespan? What's not to like?

Global warming is controversial, of course, but the controversy is mainly over whether human activity is driving it.

Science fiction without the science just becomes, you know, sword and sorcery, basically stories about heroism and not much more.