Chances are, when we meet intelligent life forms in outer space they're going to be descended from predators.

When we're born, we want to know why the stars shine. We want to know why the sun rises.

In the future we'll be able to mentally contact anybody we want, see whatever image we want. And when we don't like it, we'll just turn it off.

I'm not a science fiction writer, I'm a physicist. These are scientists who are making the future in their laboratories.

We are not at the end but at the beginning of a new physics. But whatever we find, there will always be new horizons continually awaiting us.

In physics, one of the most exciting areas is in nanotech. With computers exhausting the power of silicon, Silicon Valley could become a Rust Belt, unless we can find replacements, such as quantum computers and molecular computers. To be a leader in any field, one has to have a great imagination. Sure, we have to know the basics and fundamentals. But beyond that, we have to let our imagination soar.

I realized very early in life what my abilities and limitations were, and foreign languages was definitely one of my limitations. With strenuous effort, I just barely passed my French class at Harvard so I could graduate.