The wise man is satisfied with the more modest but much more definite term contentment. What education should chiefly aim at is to save us from a discontented life.
 William James, The Varieties of Religious Experience (1902). copy citation

Context

“For instance, on the very day on which I write this page, the post brings me some aphorisms from a worldly-wise old friend in Heidelberg which may serve as a good contemporaneous expression of Epicureanism: “By the word ‘happiness’ every human being understands something different. It is a phantom pursued only by weaker minds. The wise man is satisfied with the more modest but much more definite term contentment. What education should chiefly aim at is to save us from a discontented life. Health is one favoring condition, but by no means an indispensable one, of contentment. Woman's heart and love are a shrewd device of Nature, a trap which she sets for the average man, to force him into working.” source