Unfortunately, kids are led to believe things are easier to achieve than they really are.

Walking around on the moon was significantly easier than we'd thought it would be. There weren't any balance problems, so you weren't tumbling over.

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

Like actors and writers who are on and off again in terms of employment, I had a very unstructured life.

If you want to say that the sky is black, and if I'm there, even if I fall back down again, I will be weightless for a period of time - maybe that's the definition of space.

I'm sure that there are places in the deserts in Australia that could be similar to where we might want to go on Mars.

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.