Today's clunky smart glasses will be replaced by smart contact lenses. We'll command them by voice, blinking, or even thinking, to interact visually in 3-D with the Internet.

We are slowly isolating the genes involved with the aging process. We do not have the fountain of youth, but I think, in the coming decades, we will unravel the aging process at the genetic level.

I used to watch the old 'Flash Gordon' series on TV, and it was thrilling to rocket to the planet Mongo every week. But after a while, I figured out that although Flash got the girl and all the accolades, it was really Dr. Zarkov who made the series work. Without Dr. Zarkov, there could be no Flash Gordon.

The brain weighs only three pounds, yet it is the most complex object in the solar system.

So often, science fiction helps to get young people interested in science. That's why I don't mind talking about science fiction. It has a real role to play: to seize the imagination.

Science is given almost no visibility in the media. If a Martian came down to Earth and watched television, he'd come to the conclusion that all the world's society is based on Britney Spears and Paris Hilton. He'd be amazed that our society hasn't collapsed.

A soul might very well exist, but we, as physicists, try to measure and quantify everything. So far, no one has been able to create an experiment to do this for the soul. Efforts have been made to weigh the body after death, but each time we find no evidence of a soul. So a soul may very well exist, but it is not a testable theory.