Pleasure principle

Bork warns that America is in the grip of a radical individualism that recognizes no limit to the right of personal gratification, one for which the pleasure principle is the only principle that counts.

Health, too, was a consideration, though it was very much pleasure-principle health—the right to wring out every last throb of ecstasy from one's knackered organs.

They can’t seem to decide if the moral imperative is more crucial than the pleasure principle, or the other way around.

The pleasure principle is, on the whole, a sound one, then: having what you like is fine so long as you don't have too much of it in one go.