Trillian: "that's just fine, really... just part of life."
Marvin: "Life. Don't talk to me about life."

Ford: "Life," he said, "is like a grapefruit."
Creature: "Er, how so?"
Ford: "Well, it's sort of orangey-yellow and dimpled on the outside, wet and squidgy in the middle. It's got pips inside, too. Oh, and some people have half a one for breakfast."