Aitareya Upanishad

Aitareya Upanishad The heart took shape; from the heart issued the internal organ (mind); from the internal organ came the Moon the Moon entered into the heart in the shape of the mind; He wanted to take it up with the mind. He did not succeed in taking it up with the mind. If He had taken it up with the mind, then one would have become satisfied by merely thinking of food. "If utterance is done by the organ of speech, smelling by the sense of smell, seeing by the eye, hearing by the ear, feeling by the sense of touch, thinking by the mind, the act of drawing in (or pressing down) by Apana, ejecting by the procreative organ, then who (or what) am I?" It is this heart (intellect) and this mind that were stated earlier. It is sentience, rulership, secular knowledge, presence of mind, retentiveness, sense-perception, fortitude, thinking, genius, mental suffering, memory, ascertainment resolution, life-activities, hankering, passion and such others. All these verily are the names of Consciousness.