this proposition has been condemned several times over in Catholic teaching, especially at the end of the 19th c. The Syllabus of Errors and Vatican I spring promptly to mind.
But returning to Thomas for a moment. As I pointed out earlier, with regards to the Summa Contra Gentiles, Thomas sketches broad agreement between Catholics and Muslims (and righteous pagans, like Aristotle) on the doctrine of God and Creation (Muslims only). In fact there are all sorts of things for which one does not need revelation at all in order to know God. About 4/5 of the SCG, in fact, deals with precisely these topics. Only the final book deals with topics that Thomas thinks can be known by revelation alone (Trinity and Incarnation being primary among them). But Thomas has already laid out the whole doctrine of the divine Being by then: a treatment of God as One. Thomas thinks the philosophers knew these truths, esp. the doctrine of God (Aristotle gets quoted very liberally, and Ibn’Rushd shows up more than a few times). And for most people these are, Thomas notes, quite rightly articles of belief (most people do not have the time, inclination or need to make them matters of knowledge, though they can be).
They ARE all talking about the same God: Thomas, Aristotle, Ibn’Rushd. Christians happen to have a bit more information (information that is needful for salvation), but this information does not contradict or undermine anything that comes prior in the SCG. Instead, it fills out what is already knowable to anyone. Aristotle and Ibn’Rushd knew, and Muslims rightly believe in, God…however inadequately.
two points here:
- I used the word “Allah” who knows how many times during liturgy this morning, quite often in explicitly Trinitarian contexts, including the Trisagion (which btw, is in my signature…so the word “Allah” is in my signature as well). Allah is of course God, and therefore talking about the Trinity is in no way inappropriate or contradictory. Whether Muslims recognize it or not, whether Muslims agree or not, Christians believe Allah is the same as the Trinitarian God.
- Jesus is usually the Incarnation of the second person of the Trinity for Christians.
Since you ignored the rest of my examples, but concluded that my friend and I were not talking about the same God…I am left to assume that you think Augustine and Nyssa are talking about different gods. That Thomas and Anselm are speaking of two different humanities (whatever that might mean). That my friend and I are talking about two different deck chairs. If you don’t think that, I would love to know why and how it is that those examples are different from the last, concerning myself and my Muslim friend…because we tend to think we are talking about the same God, when we talk to one another (despite our disagreements).
salaam.