The purpose of life is to stay alive. Watch any animal in nature--all it tries to do is stay alive. It doesn't care about beliefs or philosophy. Whenever any animal's behavior puts it out of touch with the realities of its existence, it becomes exinct.

The experience of climbing Kilimanjaro affected me so powerfully that, for a long time afterward, if I caught myself saying, "I'm not a person who likes to do that activity, eat that food, listen to that music," I would automatically go out and do what I imagined I didn't like. Generally I found I was wrong about myself - I liked what I thought I wouldn't like. And even if I didn't like the particular experience, I learned I liked having new experiences.

I can tell you that second hand smoke is not a health hazard to anyone and never was, and the EPA has always known it.

No man is so good as to be free from all evil, nor so bad as to be worth nothing.

This is the gift of your species and this is the danger, because you do not choose to control your imaginings. You imagine wonderful things and you imagine terrible things, and you take no responsibility for the choice. You say you have inside you both the power of good and the power of evil, the angel and the devil, but in truth you have just one thing inside you - the ability to imagine.

The minute we look, we cease being afraid.

I think every writer should have tattooed backwards on his forehead, like ambulance on ambulances, the words 'everybody needs an editor.