He is never seen, but he is the Seer;

He is never heard, but is the Hearer;

He is never thought, but is the Thinker;

He is never known, but is the Knower.

There is no other seer but Him, no other hearer but Him, no other thinker but Him, no other knower but Him.

He is the antaryāmī (inner Ruler), your immortal Self. Everything else but Him is fleeting