Joseph Campbell
Author: Joseph Campbell
Publisher: Joseph Campbell Foundation (2011)

The word yoga itself, from a Sanskrit verbal root yuj, meaning 'to yoke, to link one thing to another,' refers to the act of linking the mind to the source of mind, consciousness to the source of consciousness; the import of which definition is perhaps best illustrated in the discipline known as knowledge yoga, the yoga, that is to say, of discrimination between the knower and the known, between the subject and the object in every act of knowing, and the identification of oneself, then, with the subject. 'I know my body. My body is the object. I am the witness, the knower of the object. I, therefore, am not my body.' Next: 'I know my thoughts; I am not my thoughts.' And so on: 'I know my feelings; I am not my feelings.' You can back yourself out of the room that way. And the Buddha then comes along and adds: 'You are not the witness either. There is no witness.' So where are you now? Where are you between two thoughts? That is the way known as jnana yoga, the way of sheer knowledge.