Isha

The Isha Upanishad describes of the nature of the supreme being (Ish). It presents a monist perspective of the universe,describing this being as "unembodied, omniscient, beyond reproach, without veins, pure and uncontaminated", one who "moves and does not move", who is "far away, but very near as well" and who "although fixed in His abode is swifter than the mind".
The text then asserts the oneness of the supreme self. "For the enlightened one all that exists is nothing but the Self (Atman)" and asks "So how could any delusion or suffering continue for those who know this oneness?"

"Filled with Brahman are the things we see,
Filled with Brahman are the things we see not,
From out of Brahman floweth all that is:
From Brahman all–yet is he still the same.
Om. Peace—peace—peace."