Man's mind and spirit grow with the space in which they are allowed to operate.

The economic function of space industrialization is to generate jobs on Earth, not in space.

If God wanted man to become a spacefaring species, he would have given man a moon.

Man, the cutting edge of terrestrial life, has no rational alternative but to expand the environmental and resource base beyond Earth.

People always love it when you say their dogs are nice. Just shows you how out of touch they are.

Sometimes I can hear my bones straining under the weight of all the lives I’m not living.

Nobody is bored when he is trying to make something that is beautiful or to discover something that is true.

Being famous hasn't changed my perception of myself - I've just grown up.

Fish die belly upward, and rise to the surface. Its their way of falling.

He's the kind of liar who totally forgets what he told you the last time, but he believes every single lie with such conviction that sometimes he can convince you of it.

A golden tomb is useful only for the thieves!

America comes from a flawed but wonderful idea. Many great things have sprung forth over the past few hundred years but there were deep issues in the beginning that now are starting to show up.

I've had a terrific life, from building one company to be the second largest company in the securities industry and merging that into American Express, and becoming president of that company.

There is nothing worse than an enemy with imagination.