"Achievement of your happiness is the only moral purpose of your life, and that happiness, not pain or mindless self-indulgence, is the proof of your moral integrity, since it is the proof and the result of your loyalty to the achievement of your values."
Ayn Rand was a Russian-American writer and philosopher best known for The Fountainhead and Atlas Shrugged. She developed the philosophical system she called Objectivism and became an influential figure in 20th-century political and intellectual debate.