Morality—like velocity—is relative. The determination of it depends on what the objects around you are doing. All one can do is measure one's position in relation to them; never can one measure one's velocity or morality in terms of absolutes.

Morality—like velocity—is relative. The determination of it depends on what the objects around you are doing. All one can do is measure one's position in relation to them; never can one measure one's velocity or morality in terms of absolutes.

True genius can be identified by the fact that its expression changes the world into something it has never been before.

What I wish is that people would look beyond the tribbles and see I've written some other books that I really would like people to notice. There's The Man Who Folded Himself, there's The Martian Child, which is about my son and the adoption. There's The War Against The Chtorr, which is my magnum opus, my great epic story.

I had always been fascinated by the whole idea that Australia was this different ecology and that when rabbits and prickly pears and other things from Europe were introduced into Australia, they ran amok.

Adolescence is that time in your life when you discover your ability to be depressed.

The fifties are a peaceful time, a quiet sleeping time between two noisy bursts of years, a blue and white time filled with sweet yellow days, music and bright smelling memories.