Jnana yoga
Union with God through the dissolution of ignorance. Knowledge, of course, begins with self-knowledge. The jnana yogi seeks knowledge not only through study but through direct experience of God. Jnana yoga is also the path of discrimination between the real and the unreal. It falls in the second quadrant of the Cosmic Clock, the mental quadrant. Jnana yoga is best suited to the contemplative or monastic person.
See also
Sources
Mark L. Prophet and Elizabeth Clare Prophet, The Masters and the Spiritual Path.