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. The self of one who has subjugated his self and is tranquil, is absolutely concentrated (on itself), in the midst of cold and heat, pleasure and pain, as well as honour and dishonour. The devotee whose self is contented with knowledge and experience, who is unmoved, who has restrained his senses, and to whom a sod, a stone, and gold are alike, is said to be devoted.