93. He whose appetites are stilled, who is not absorbed in enjoyment, who has perceived void and unconditioned freedom (Nirvâna), his path is difficult to understand, like that of birds in the air.
94. The gods even envy him whose senses, like horses well broken in by the driver, have been subdued, who is free from pride, and free from appetites.
95. Such a one who does his duty is tolerant like the earth, like Indra’s bolt; he is like a lake without mud; no new births are in store for him.
96. His thought is quiet, quiet are his word and deed, when he has obtained freedom by true knowledge, when he has thus become a quiet man.
DHAMMAPADA, Chapter 7. The Venerable (Arhat)