Ursula K. Le Guin quotes - page 12
Like all walls it was ambiguous, two-faced. What was inside it and what was outside it depended upon which side of it you were on. Looked at from one side, the wall enclosed a barren sixty-acre field called the Port of Anarres. [...] It was in fact a quarantine. The wall shut in not only the landing field but also the ships that came down out of space, and the men that came on the ships, and the worlds they came from, and the rest of the universe. It enclosed the universe, leaving Anarres outside, free. Looked at from the other side, the wall enclosed Anarres: the whole planet was inside it, a great prison camp, cut off from other worlds and other men, in quarantine.
Ursula K. Le Guin
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.
Ursula K. Le Guin