Anyone in business knows this rubric. The problem that designers have is that we always want to produce good work while clients always want it cheap and fast – perhaps this is why designers are so poor. Occasionally we succeed at making everybody happy but when clients expect all three every time – well, then we don’t expect to be working with that client for very long. (Image found via Eyebeam)
I think it sounds like something I once saw on Monte Python's Flying Circus!