Love is often nothing but a favorable exchange between two people who get the most of what they can expect, considering their value on the personality market. Each person is a "package" in which several aspects of his exchange value are blended into one: His "personality", by which is meant those qualities which make him a good salesman of himself; his looks, education, income, and chance for success — each person strives to exchange this package for the best value obtainable. Even the function of going to a party, and of social intercourse in general, is to a large extent that of exchange. One is eager to meet the slightly higher-priced packages, in order to make contact and possibly a profitable exchange.
— Erich Fromm