"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 resu…"

"The only power that can destroy a man is the power of his own mind."

"The most selfish of all things is the human mind."

"The ladder of success is best climbed by stepping on the rungs of opportunity."

"A society that robs an individual of the product of his effort, or enslaves him, or attempts to limit the freedom of his mind, is not, strictly speaking, a society, but a mob held together by institut…"