Never limit yourself because of others' limited imagination; never limit others because of your own limited imagination.

Greatness can be captured in one word: lifestyle. Life is God's gift to you, style is what you make of it.

To survive as a species on this planet, we're going to have to see ourselves as Earthlings.

We look at science as something very elite, which only a few people can learn. That's just not true. You just have to start early and give kids a foundation. Kids live up, or down, to expectations.

Intuitive versus analytical? That's a foolish choice. It's foolish, just like trying to choose between being realistic or idealistic. You need both in life.

The reality is the majority of us will not get off this planet. So the long run is, some kind of space exploration has to benefit us here on Earth.