A child becomes an adult when he realizes that he has a right not only to be right but also to be wrong.

Conceit

Narcissist: psychoanalytic term for the person who loves himself more than his analyst; considered to be the manifestation of a dire mental disease whose successful treatment depends on the patient learning to love the analyst more and himself less.

Duty

It is easier to do one's duty to others than to one's self. If you do your duty to others, you are considered reliable. If you do your duty to yourself, you are considered selfish.

Happiness

Happiness is an imaginary condition, formerly often attributed by the living to the dead, now usually attributed by adults to children, and by children to adults.

Knowledge

Knowledge is gained by learning; trust by doubt; skill by practice; love by love.

Mental Illness

No further evidence is needed to show that "mental illness" is not the name of a biological condition whose nature awaits to be elucidated, but is the name of a concept whose purpose is to obscure the obvious.

Punishment

If he who breaks the law is not punished, he who obeys it is cheated. This, and this alone, is why lawbreakers ought to be punished: to authenticate as good, and to encourage as useful, law-abiding behavior. The aim of criminal law cannot be correction or deterrence; it can only be the maintenance of the legal order.

Systems

The system isn't stupid, but the people in it are.