Weve got to go [back to the moon]. But we dont want to stay too long. ... The ultimate goal is Mars.

We'll get to the details of what's around here, but it looks like a collection of just about every variety of shape - angularity, granularity, about every variety of rock.... The colors - well.... There doesn't appear to be too much of a general color at all; however, it looks as though some of the rocks and boulders are going to have some interesting colors to them. Over.

The life expectancy of people going to Mars may be decreased by the higher level of radiation that they receive.

When the time comes to start building deep space transports and refueling rocket tankers, it will be the commercial industry that steps up, not another government-owned, government-managed enterprise.

We should go boldly where man has not gone before. Fly by the comets, visit asteroids, visit the moon of Mars. There's a monolith there. A very unusual structure on this potato shaped object that goes around Mars once in seven hours. When people find out about that they're going to say 'Who put that there? Who put that there?' The universe put it there. If you choose, God put it there.

We can't start over and develop a Saturn 5-type vehicle from scratch.

When we set out to land people on the surface of Mars, I think we should as a nation, as a world, commit ourselves to supporting a growing settlement and colonization there. To visit a few times and then withdraw would be an unforgivable waste of resources.