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At this point, we reach a difficulty. We have spoken often about the sublimity of the Divine nature and the lowliness and, truly, nothingness of creatures in comparison to God. How, then, can we predicate the same term both to us and to God?
St. Thomas treats this in many other places and adds a helpful structure, thus, I will be explaining this after that manner, adding certain notes of logic that are helpful.
For, what is a name? A name is a certain enunciation that expressed the ratio of a thing. Thus, when I say "man" I am expressing the ratio of man. This ratio is itself an impression (in the intellect) of the form of a thing.