X
Beyond the senses are the objects, beyond the objects is the mind, beyond the mind is the intellect, beyond the intellect is the great Atman.
XI
Beyond the great Atman is the Unmanifested; beyond the Unmanifested is the Purusha (the Cosmic Soul); beyond the Purusha there is nothing. That is the end, that is the final goal.
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.
XII
This Atman (Self), hidden in all beings, does not shine forth; but It is seen by subtle seers through keen and subtle understanding.
If It dwells in all living beings, why do we not see It? Because the ordinary man's vision is too dull and distracted. It is visible to those alone whose intellect has been purified by constant thought on the Supreme, and whose sight therefore has become refined and sharpened. This keenness of vision comes only when all our forces have been made one-pointed through steadfast practice of concentration and meditation.
XIII
A wise man should control speech by mind, mind by intellect, intellect by the great Atman, and that by the Peaceful One (the Paramatman or Supreme Self).