Unfortunately, I don't think I keep my ego in check very well. I try to remember that my voice is loud, which is an ego problem. But at least I don't suffer from self-deluding identity problem like, say, Carl Sagan does. … With each passing year he grows stiffer because he goes around thinking he's Carl Sagan. Just as Norman Mailer thinks he's Norman Mailer and Gore Vidal thinks he's Gore Vidal. I don't think I'm Ray Bradbury. That's a big distinction. It doesn't matter who you are. You mustn't go around saying who you are, or else you get captured by the mask of false identity. It's the work that identifies you.

Playboy interview (1996)