There is a lot of it, as it turns out, in both Eastern and Western Christian traditions.
I'm posting these without the references, sorry, because I have managed to clear the whole day and evening for thinking and writing and I am hogging it. It's raining in Greensboro, still warm and humid, but somehow easier to take (for this lover of Mediterranean climates who suffers in Southeastern weather) than the hovering-humidity weather when the skies don't open. It'll be back to muggy soon. A good day to be at home with the books.