The world wasn't a more tolerant place when I was a young man. Rather, they simply sidestepped all the issues.

Man is an artifact designed for space travel. He is not designed to remain in his present biologic state any more than a tadpole is designed to remain a tadpole.

The country with a low birth rate and low death rate will be hardest hit - and so the poor may indeed inherit the earth, because they're healthier.

And there are my cats, engaged in a ritual that goes back thousands of years, tranquilly licking themselves after the meal. Practical animals, they prefer to have others provide the food ... some of them do. There must have been a split between the cats who accepted domestication and those who did not.

A doctor is not criticized for describing the manifestations and symptoms of an illness, even though the symptoms may be disgusting. I feel that a writer has the right to the same freedom In fact, I think that the time has come for the line between literature and science, a purely arbitrary line, to be erased.

I knew [Timothy] Leary, but barely knew, didn't really know Jan [Kerouac].

How I hate those who are dedicated to producing conformity.