From: Atlas Shrugged of Ayn Rand

This is exactly my idea of true happiness.

Happiness is not to be achieved at the command of emotional whims. Happiness is not the satisfaction of wahtever irrational wishes you might blindly attempt to indulge.

Happiness is a state of non-contradictory joy - a joy without penalty or guilt, a joy that values and does not work for your own destruction, not the joy of escaping from your mind, but of using your mind's fullest power, not the joy of faking reality, but of achieving values that are real, not the joy of a drunkkard, but of a producer.

Happiness is possible only to a rational man, the man who desires nothing but rational actions.

Just as I support my life, neither by robbery nor alms, but by my own effort, so I do not seek to derive my happiness from the injury or the favor of others, but earn it by my own achievement.