“A liberated person enjoys happiness by factual experience. He can, therefore, sit silently at any place and enjoy the activities of life from within. Such a liberated person no longer desires external material happiness. This state is called brahma-bhuta, attaining which one is assured of going back to Godhead, back to home.” (Shrila Prabhupada, Bhagavad-gita, 5.24 Purport)