Eternal among the changing, consciousness of the conscious, who, though one, fulfils the… — Katha Upanishad (Paramananda)

Eternal among the changing, consciousness of the conscious, who, though one, fulfils the desires of many: the wise who perceive Him seated within their Self, to them belongs eternal peace, not to others.

From Swami Paramananda, The Upanishads (1919)