"The self-indulgent man, then, craves for all pleasant things or those that are most pleasant, and is led by his appetite to choose these at the cost of every thing else; hence he is pained both when he fails to get them and when he is merely craving them (for appetite involves pain); but it seems absurd to be pained for the sake of pleasure."
--Aristotle, "Nichomachean Ethics" THE BASIC WORKS OF ARISTOTLE , edited by Richard McKeon (1941, 2001), p. 982