"He who knows much about others may be learned, but he who understands himself is more intelligent. He who controls others may be powerful, but he who controls and has mastered himself is mightier still. He who receives his happiness form others may be rich, but he whose contentment is self-willed has inexhaustible wealth. He who occupies a place provided for him by others may live a long life, but he who dwells in his own self-constituted place, even though he decays, is eternal."