De docta ignorantia

Let us now show most briefly that from unity is begotten the equality of unity, but that connexion proceeds from unity and from the equality of unity.

Unity is so called as it were oneness from the Greek word ov, which in Latin is called being, and unity is entity. For God is the very entity of things, for he is the form of being, wherefore also entity. But the equality of unity is as it were the equality of entity, that is, equality of being or of existing. But equality of being is that in a thing there is neither more nor less, nothing beyond, nothing below.

For if in a thing there is more being, it is monstrous; if less, it is not: the generation of equality from unity, which is clearly discerned when one attends to what generation is; for generation is the repetition of unity, or the multiplication of the same nature proceeding from the father into the son.

And this generation is indeed found only in perishable things: but the generation of unity from unity is one repetition of unity, that is, unity once; for if it multiplied unity twice, or thrice, or successively, unity would already procreate another from itself, as the binary, or ternary, or another number; but unity repeated once only begets the equality of unity, which cannot be understood as anything other than that unity begets unity, and this generation is indeed eternal.