The cross of the Lord is the key by which closed things can be opened. (Augustine, EnPs 45, 1; PL 36, 514)
Our slow hearts would not follow did Truth not see fit to walk even with the slow. (De continentia, 4)
Don’t live, then, according to your own lights; that’s how you got lost–but you were sought. No, don’t live by your own lights; that’s how you got lost–but you were found. (De continentia, 11)
It’s good for a sinner to be brought low. No one is more incurable than one who thinks himself healthy (Augustine, EnPs 58, II, 8; PL 36, 711).
You’re so blind you’re also deaf (Augustine, EnPs 63, 11; PL 36, 765).
The soul’s natural warmth is the love of God. (Aquinas on Ps 13:1)