There is an origin and source of virtue. There is a root of wisdom. And, there is, so to speak, a region of changeless truth. If the soul leaves this region, it lives in darkness but, when it approaches this region, it is enlightened.
(En. in ps. 58, S 1, 18)
Let us devoutly celebrate this day, for just as the first ones to share our faith adored Christ lying in the manger, let us adore Him reigning in heaven.
Love overwhelms us as we look for the truth.
(De Trinitate I, 5, 8)