Krishna delivers one of the most brilliant, clinical definitions of Yoga in the entire text. He says: You must know and understand (taṃ vidyād) that this specific state—the absolute severance and disconnection from the union with pain and sorrow (duḥkha-saṃyoga-viyogaṃ)—is what is truly known by the name of 'Yoga' (yoga-sañjñitam). Furthermore, this Yoga must be practiced and engaged in (sa yoktavyo) with absolute, resolute determination (niścayena) and with a mind that is unwearied, un-depressed, and refuses to quit (anirviṇṇa-cetasā).