People like to do things. They like to do them well. People take the dangerous, hard jobs because they take pride in doing them, they can—egoize, we call it—show off?—to the weaker ones. Hey, look, little boys, see how strong I am! You know? A person likes to do what he is good at doing.... But really, it is the question of ends and means. After all, work is done for the work's sake. It is the lasting pleasure of life. The private conscience knows that. And also the social conscience, the opinion of one's neighbors. There is no other reward, on Anarres, no other law. One's own pleasure, and the respect of one's fellows. That is all. When that is so, then you see the opinion of the neighbors becomes a very mighty force.
Chapter 5 (p. 150) - Hainish Cycle - The Dispossessed (1974)