Today I begin a series of posts on Thomas Aquinas’s view of the virtues. Most of my focus in this series will be on what are often called the “cardinal” virtues—wisdom (or “prudence”), justice, courage, and temperance—and the “theological” virtues—faith, hope, and love (or “charity”). However, in order for that discussion to make sense, I need to begin with the virtue of understanding.
Understanding is what Aquinas calls an “intellectual” virtue, i.e., an excellent quality of the thinking part of our minds that allows us to think or reason well in a particular sense. As Aquinas puts it, understanding allows us to grasp “self-evident principles both in speculative and in practical matters” (Summa Theologica I-II, Question 58, Article 4). This dense statement needs some unpacking. Continue reading