What is the relationship and/or opposition between Aquinas' writings and Magisterium? That is, what can generally be said about using Aquinas to explain doctrine?

Or contrarily, does Aquinas stand in opposition to Magisterium such that his works cannot generally be used to explain or refine statements found in encyclicals?

This question: Are Catholics required to accept every article of Aquinas's «Summa Theologica»? does NOT answer my question. That question is about whether all parts of the Summa must be accepted (which is not quite but similar to "are all parts of the Summa magisterial?"). The answer was determined to be no and while the answers include substantial information around Aquinas', it doesn't answer what weight Aquinas has in relation to magisterial statements. i.e. In what case if any is the argument "that's substituting Aquinas for the Magisterium" reasonable or correct?

  • I don't want to mod-hammer close this question (and I didn't DV fwiw) but have you looked at christianity.stackexchange.com/questions/50210/…? I'm guessing a downvote is for lack of meat in the question
    – Peter Turner
    Oct 4 at 13:42
  • That's not the same concept I'm getting at. That one is similar to "does Catholic magisterium include all of the Summa?" and I'm more asking "Does an opposition or concord exist between Aquinas and the Magisterium?" Namely because I've been accused of using Aquinas in place of the Magisterium.
    – eques
    Oct 4 at 13:45
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    @PeterTurner also eques: I have been meaning to ask a question similar to this, to confirm whether there is a certain hierarchy / priority. Example: is it right that when there is an explicit teaching in the Catechism / encyclical / church documents / other promulgated docs to all bishops then those take precedence? That Aquinas, being one of the Doctors, qualifies his writings to be consulted when those documents don't explicitly address an issue and when there's a conflict, the documents trump the Summa? Is that hierarchical usage the established practice of the Catholic Church? Oct 4 at 15:42
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    @GratefulDisciple this answer explains the hierarchy christianity.stackexchange.com/a/54918/4 in relation to submission, but not in precedence for consultation. But, if you had to do a OG google page rank on recent encyclicals and documents it seems like they have really liked referencing Vatican II and Vatican I documents followed by other encyclicals less than 50 years old. Aquinas is referenced here WAY more than in anything I've ever read from the Vatican.
    – Peter Turner
    Oct 4 at 15:57
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    @eques in some cases, the magisterium points to Aquinas for support of a doctrine. In other cases, his points contradict the magisterial conclusions, so I don't think it makes sense to speak broadly of "replacing" the magisterium with Aquinas. There are many, many cases wherein Aquinas is cited in magisterial documents, probably second in frequency only to scripture. Unless you are discussing a particular doctrine where Aquinas and the magisterium are known to disagree, relying on Aquinas for your theological information is a safe bet.
    – jaredad7
    Oct 5 at 13:52

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