He, by whom self has been subjugated by self and has himself for his friend; for himself is ever his friend and himself is ever his enemy.
बन्धुरात्माऽऽत्मनस्तस्य येनैवात्माऽऽत्मना जितः। स एव नियतो बन्धुः स एव नियतो रिपुः॥