Yes. If the emanation of the whole universal being from the first principle be considered, it is impossible that any being should be presupposed before this emanation because creation, which is the emanation of all being, is from the "not-being" which is "nothing", just as the generation of a man is from the "not-being" which is "not-man".
We must consider not only the emanation of a particular being from a particular agent, but also the emanation of all being from the universal cause, which is God; and this emanation we designate by the name of creation.
Augustine uses the word creation in an equivocal sense, according as to be created signifies improvement in things; as when we say that a bishop is created. We do not, however, speak of creation in that way here.
Now what proceeds by particular emanation, is not presupposed to that emanation; as when a man is generated, he was not before, but man is made from "not-man," and white from "not-white".
Nothing is the same as no being. Hence if the emanation of the whole universal being from the first principle be considered, it is impossible that any being should be presupposed before this emanation.