(A man) should elevate his self by his self; he should not debase his self, for even (a man's) own self is his friend, (a man's) own self is also his enemy. To him who has subjugated his self by his self, his self is a friend; but to him who has not restrained his self, his own self behaves inimically, like an enemy.
By watchfulness of the mind he concentrates his thoughts; thereby he truly practises control. By watchfulness of speech he keeps free from prevarication; thereby he enables his mind to act properly.
Eat in proportion to thy hunger; how can he give praises who scarce can breathe by reason of his gluttony? He whose stomach is full is void of wisdom. The prey is entrapped in the snare because of its greed. …