After being alive, the next hardest work is having sex. Of course, for some people it isn't work because they need the exercise and they've got the energy for the sex and the sex gives them even more energy. Some people get energy from sex and some people lose energy from sex. I have found that it's too much work. But if you have the time for it, and if you need that exercise—then you should do it. But you could really save yourself a lot of trouble either way by first figuring out whether you're an energy-getter or an energy-loser. As I said, I'm an energy-loser. But I can understand it when I see people running around trying to get some.

Ch. 6: Work - The Philosophy of Andy Warhol (1975)