"Verily, verily, I say to you, he who rules his own self is greater than he who captures a city. Self-mastery is the measure of man's moral nature and the indicator of his spiritual development.
P.1609 - §4



"If, then, the spirit dwells within you, you are no longer bondslaves of the flesh but free and liberated sons of the spirit. The new law of the spirit endows you with the liberty of self-mastery in place of the old law of the fear of self-bondage and the slavery of self-denial.
P.1609 - §5



"... Self is man's invincible foe, and self is manifested as man's four greatest passions: anger, pride, deceit, and greed. Man's greatest victory is the conquest of himself."
P.1451 - §0