Nobody needs to say. Your argument is incongruent with its premises, and therefore it is false. Common sense doesn’t need to be dogmatically defined.
If time is meant in the sense that you propose it to mean, then the spiritual order of creatures exist within time, again, in the sense that you propose to mean it. That is, that they are subject to the time/space continuum, and therefore possess a corporeal body as matter, rather than being purely spiritual. This is entirely contradictory to the material/spiritual dichotomy presented by the text.
“From the beginning of time made at once out of nothing both orders of creatures, the spiritual and corporeal, that is, the angelic and the earthly…”
If we take your premise to true, then spiritual creatures exist as corporeal creatures, which is false because spiritual creatures, by definition and explicitly contrasted with corporeal creatures, exist apart from corporeal creatures.
Now, it is not logically objectionable to consent to a preternatural or metaphysical interpretation of time, in that there is an understanding of time which supersedes the natural order (obviously, the prerogative being that the locale of that “time” is the spiritual order of creation). That is, a metaphysical understanding of time that goes even beyond the theory of Relativity. But adhering to this understanding contradicts what you’ve said thus far, because “from the beginning of time” it would be synonymous with “from the beginning of creation”, as “time” in this sense encompasses both the angelic and corporeal realms, as well as the composite of both (which is humanity).
What’s even more interesting is that Einstein didn’t discover the theory of Relativity until 1920. The third session of Vatican I took place in April, 1870. Time was a metaphysical concept until the theory of Relativity was discovered.
Time/space is finite, Anthony.
Your claim that “time” is meant in terms of “time/space continuum” cannot hold even within the hypothetical you are proposing. It is more fitting to use the phrase “from the beginning of creation” to interpret this, both for logical reasons, and for historical reasons.
It follows, very clearly and logically, that the human person is a substantial union of body and spirit according to the documents of Vatican I, that is, over and against your hypothesis that Adam and Eve existed before time as spirits.