Katha 166

In these two verses the Teacher shows the process of discrimination, by which one attains knowledge of the subtle Self. Beginning with the sense-organs, he leads up to the less and less gross, until he reaches that which is subtlest of all, the true Self of man. The senses are dependent on sense-objects, because without these the senses would have no utility. Superior to sense-objects is the mind, because unless these objects affect the mind, they cannot influence the senses. Over the mind the determinative faculty exercises power; this determinative faculty is governed by the individual Self; beyond this Self is the undifferentiated creative energy known as Avyaktam; and above this is the Purusha or Supreme Self. Than this there is nothing higher. That is the goal, the Highest Abode of Peace and Bliss.