I'm not in favor of just taking short-term isolated situations and depleting our resources to keep our climate just the way it is today.

The decision to go to the moon is now appreciated and associated with President Kennedy's speech, but somebody else had told him it was a good idea. It turned out to be a good commitment, but it was a unique situation.

Long-term, I see robotics prevailing on the moon. . . . The most important decision we'll have to make about space travel is whether to commit to a permanent human presence on Mars. Without it, we'll never be a true space-faring people.

Space tourism is a logical outgrowth of the adventure tourist market.

Many say exploration is part of our destiny, but it's actually our duty to future generations and their quest to ensure the survival of the human species.

America can take man to the moon, and America can take men to Mars - and beyond.

My own American Dream was to serve my country as best I could and make a difference in America - and in the world.