My first biography written in '73 was not 'Journey To The Moon.' It was 'Return To Earth.' Because for me, that was the more difficult task - disappointment.

I think humans will reach Mars, and I would like to see it happen in my lifetime.

The biggest benefit of Apollo was the inspiration it gave to a growing generation to get into science and aerospace.

If we can conquer space, we can conquer childhood hunger.

No dream is too high for those with their eyes in the sky!

Exploration is wired into our brains. If we can see the horizon, we want to know what's beyond.

I still say, 'Shoot for the moon; you might get there.'

Knowledge of the past and an optimistic view of the present give you great opportunities.

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.

Neil Armstrong was the first man to walk on the moon. I am the first man to piss his pants on the moon.

There may be aliens in our Milky Way galaxy, and there are billions of other galaxies. The probability is almost certain that there is life somewhere in space.

Shock doesn't hit all at once. I have learned.

The highest form of bliss is living with a certain degree of folly.

Self-pity is essentially humorless, devoid of that lightness of touch which gives understanding of life.

Personality is to a man what perfume is to a flower.

Courage is a fickle creature. Just as you need it, it often makes excuses and rushes out of the room.

The airline business is it is mostly run by a bunch of spineless nincompoops who actually don't want to stand up to the environmentalists and call them the lying wankers that they are.

Does humanity have a chance to survive lastingly and successfully on planet Earth, and if so, how?

In Hollywood, it's hard to be funny, because all the big jokes are in Washington.

You made your own jean shorts...with a butter knife?

The most uninformed mind with a healthy body is happier than the wisest valetudinarian.