Intelligence must therefore fuse with thought, and must always be conscious of itself, knowing that each of the two elements that constitute it is identical with the other, and that both form but a single one. If it were only unity, it would be self-sufficient, and would have no further need of receiving anything. The precept "know thyself" applies only to natures which, because of their multiplicity, need to give an account of themselves, to know the number and the quality of their component elements, because they either do not know them entirely, or even not at all; not knowing what power in them occupies the first rank, and constitutes their being.[160] But if there be a Principle which is one by itself, it is too great to know itself, to think itself, to be self-conscious, because it is nothing determinate for itself. It receives nothing within itself, sufficing itself. It is therefore the Good not for itself, but for other natures; these indeed need the Good, but the Good has no need of itself; it would be ridiculous, and would fail to stand up to itself. Nor does it view itself; for, from this look something would arise, or exist for Him. All such things He left to the inferior natures, and nothing that exists in them is found in Him; thus (the Good) is not even "being." Nor does (the Good) possess thought, since thought is united to being, and as primary and supreme thought coexisted with essence. Therefore, one can not (as says Plato[150]), express (the divinity) by speech, nor have perception nor science of Him, since no attribute can be predicated of Him. THE BEAUTIFUL THE SUPREME OF THREE RANKS OF EXISTENCE.