People communicate in Twittering ways. I've learned how to do that.

The best way to study Mars is with two hands, eyes and ears of a geologist, first at a moon orbiting Mars... and then on the surface.

Mars is far more attractive as an outpost colony for earthlings than the moon is.

We need the next generation to be motivated and to push technological boundaries, to seek out new innovations.

A mind concerned about danger is a clouded mind. It's paralyzing.

Over the years, I think I've matured in my spiritual evolution and development to understand a bit more than the narrow religious thinking - to move beyond that through a sort of perfection of the grandiose nature of the universe, and how perfect it is it in its sense and how satisfied we should all be in our place in that.

The leader of an Earth organization who makes a commitment to history - of humans living on Earth, to begin permanent settlement/occupation of not the moon, but of another planet - this leader will have a legacy for history that will supersede Columbus, Genghis Khan or almost any recognized leader.