Enneads III.8: Of Nature, Contemplation and Unity
The Supreme as the Tree of the Universe
Again, (the Supreme may be compared to) the life that circulates in a great tree, without its principle issuing from the root, where is its seat, but which later divides among the branches. Though spreading everywhere a manifold life, the Principle still dwells in itself exempt from all manifoldness, though being only its origin.[197]
IF UNITY PASSED INTO THE MANIFOLD, THE UNIVERSE WOULD BE DESTROYED.
This contains nothing surprising. Why should we be surprised at manifoldness issuing from Him who is not manifold, or at the impossibility of the existence of the manifold without the prior existence of That which is not manifold? The Principle is not distributed in the universe; far rather, if it were disturbed, the universe would be annihilated; for it cannot exist except in so far as its Principle abides within itself, without becoming confused with the rest.