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What is Supposed to be Proved in Aquinas's Five Ways?

I'm not a Medieval scholar, so I don't really know what I'm talking about, but that's ok. Sobel's fifth chapter is concerned with Aquinas's Second Way, one of the classic texts for the cosmological argument. Sobel raises some concerns about the premises, but for the most part he finds them plausible (though he may ultimately reject one or more of them). His main concern is that, as he schematizes the argument, a fallacy of equivocation occurs at the very end. Sobel reads the 'good' part of the argument as (perhaps) justifying the 'Preliminary Conclusion'...
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Baber on the Real Presence

Some of the papers to be presented at the Society of Christian Philosophers, Pacific Division Conference have now been posted. Mine isn't up yet, but I will provide a link when it is. For now, I want to point readers to a paper by the University of San Diego's Harriet Baber which she has entitled simply "The Real Presence". We have previously discussed here the difference between transubstantiation and real presence. Baber describes this quite nicely in her introduction...
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Aristotle and Transubstantiation (Some More)

Tim Troutman (formerly known as "The God Fearin' Fiddler") of The God Fearin' Forum has responded to my latest discussion of Eucharistic theology and Aristotle. Perhaps I have not been very clear. Whatever the case, Tim persistently misunderstands both my claim and my argument for it. I am going to try to make what I am claiming very clear here:

The doctrine of transubstantiation, as expounded by Trent, is rendered incoherent by any system of metaphysics sufficiently different from Aristotle's.

This should not be confused with any of the following claims, which I do not make...
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Transubstantiation vs. Real Presence

The God Fearin' Fiddler has a post up on the historical significance of transubstantiation which has led to some interesting discussions. The principle problem with this post and the discussion that follows it, however, is that no one seems to understand the difference between transubstantiation and the Real Presence. Unfortunately, I'm not an expert on this either, but I do think I know enough to clear up some historical and metaphysical confusion. I am going to use two principal sources - session 13 of the Council of Trent, and the relevant article from the Catholic Encyclopedia - to explain the historical development and specific content of the doctrine of transubstantiation, and then attempt to show two things...
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"Three Persons, One Substance" - Paradox or Solution?

I seem to have opened quite the can of worms in my post on Church dogma the other day when I said: There seem to be some clear (to me) cases of Christian dogma that are not obviously uniquely deriveable from Scripture. For example, consider the formulation of the trinity as three persons (Greek hupostaseis and/or prosopa, Latin personae) in one substance/essence (Greek ousia, Latin essentia and/or substantia). This type of formulation is extremely common in the Christian tradition, and is derived primarily from the Chalcedonian Creed. However, I don't think we can say that it is obviously uniquely deriveable...
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