The document discusses Jnana yoga, which is the yoga of gnostic knowledge or intuitive-philosophical searching. Jnana yoga involves viveka, which is metaphysical discernment between the real and unreal. It also involves vairāgya, which is renunciation of all worldly and heavenly objects. The key aspects of Jnana yoga are sama, dama, uparati, titiksa, samadhana, sraddha, sravana, manana, and nididhyasana - which relate to tranquility, self-restraint, mind-control, endurance, contemplation, faith, listening, reflection, and meditation.