What is meant by "Catholic Truths" in Ott's «Fundamentals of Catholic Dogma»?

Based, in part, on some rather passionate comments regarding theologians made by user Geremia in the post "Who Said: 'God Did Not Become Man in Order for Man to Become a Theologian'? ", I have been enticed to look a little further into Catholic theology. After thumbing through some of the section that Geremia alludes to in Ralph McInerny's *What Went Wrong with Vatican II: The Catholic Crisis Explained* p. 96 , I have decided, for purposes of this post, to take as my starting point Dr. Ludwig Ott's *Fundamentals of Catholic Dogma* . Therein (§ 6. "Catholic Truths", pp. 8-9), I have extracted (eliminating the Latin and adding some bold) the following: >Those doctrines and truths defined by the Church not as immediately revealed but as intrinsically connected with the truths of Revelation so that their denial would undermine the revealed truths are called Catholic Truths or Ecclesiastical Teachings to distinguish them from the Divine Truths or Divine Doctrines of Revelation. These are proposed for belief in virtue of the infallibility of the Church in teaching doctrines of faith or morals. > >To these Catholic truths belong : > >1. **Theological Conclusions** properly so-called. By these are understood religious truths. which are derived from two premises, of which one is an immediately revealed truth, and the other a truth of natural reason. > >2. **Dogmatic Facts.** By these are understood historical facts, which are not revealed, but which are intrinsically connected with revealed truth, for example, the legality of a Pope or of a General Council, or the fact of the Roman episcopate of St. Peter. > >3. **Truths of Reason**, which have not been revealed, but which are intrinsically associated with a revealed truth, e.g., those philosophic truths which are presuppositions of the acts of Faith (knowledge of the supersensual, possibility of proofs of God, the spirituality of the soul, the freedom of will), or philosophic concepts, in terms of which dogma is promulgated (person, substance, transubstantiation, etc.). Can someone clarify for me, in a little less technical language, what Catholic theology means by "Catholic Truths"; and especially, "Truths of Reason"—which I find the most difficult to understand in the above list.