Psychiatry is becoming too popular. Everybody talks of complexes and neuroses and psychoses and compulsions and whatnot. One man’s guilt complex is a… - Isaac Asimov

The true delight is in the finding out rather than in the knowing.

it's a blackmail that would not work on any other planet in the Galaxy. Their own sick social system gave us this weapon and I have no compunction about using it.

It was the addition of status that brought the little things: a more comfortable seat here, a better cut of meat there, a shorter wait in line at the other place. To the philosophical mind, these items might seem scarcely worth any great trouble to acquire.
Yet no one, however philosophical, could give up those privileges, once acquired, without a pang. That was the point.