France generates a significant part of its energy requirements from fission reactors and these have achieved a perfect safety record. We build ours all differently.

Failure is a learning experience, and the guy who has never failed has never done anything.

There is more He-3 energy on the Moon than we have ever had in the form of fossil fuels on Earth. All we have to do is to go there and get it.

Nuclear fusion of light elements like hydrogen or helium would permit approaching the speed of light. It seems very attractive to refuel your space ships where the fuel is.

Our present nuclear fusion reactors are classified by the methods used to support the nuclear fusion reaction, which takes place at a temperature much hotter than the surface of the Sun.

The 20th Century was the century of Aviation and the century of Globalization. The next century will be the century of Space.

History has repeatedly shown that when a new method or material becomes available, new uses for it arise.

This is no job for a UN committee. It needs the same kind of unwavering dedication and the kinds of people that got us the first nuclear submarine and the first man on the moon.

We need the kind of leadership exemplified by President Kennedy to just do it! But we must do it as good stewards, aggressively exerting control over the moon. We can best do this by going there.

When you buy a gallon of gas, over 60 percent of the energy you pay for goes out the radiator in the form of waste heat? That's why you have a radiator in your car in the first place.

It is clear that the nation that assumes stewardship of the Moon now will inherit stewardship of the galaxy in the coming millennium. I think the USA is ready for that challenge!

Disappointment is a sort of bankruptcy - the bankruptcy of a soul that expends too much in hope and expectation.

Never fret for an only son, the idea of failure will never occur to him.

Kindness suits you." "Really? I think I'm quite allergic to it.

People do not retire. They are retired by others.

Agnosticism is the everlasting perhaps.

I'm all about change, and I know things are going to move forward in life, and that's just how it goes.

I am most drawn to writing when I have something else urgent to do.

I'm the greatest fighter in the entire world, how can I be afraid? I love people and people love me.

When I think over what I have said, I envy dumb people.

When I asked Imran Khan for an autograph he picked up his bat to hit me.