he First is richness per se, and there is no greater richness.

And proof of this is its unity, for its unity is not dispersed in it; on the contrary, its unity is pure, because it is simple in the maximum of simplicity.

However, if anyone wants to know that the First is this richness, let him turn his mind toward composite things and inquire about them with an investigative inquiry. For he will find every composite diminished, indeed, needing either another or the things of which it is composed. However, the simple thing, the One that is Goodness, is one; its unity is its goodness; and its goodness is one and the same thing.

Therefore, that thing is the greater richness that overflows without an effluence coming to be upon it in any manner. However, the other intelligible or corporeal things are not rich per se; on the contrary, they need the true One over-flowing upon them perfections and all good things.

—Liber de causis, chapter 20