I'd like to know where to look for scholarly articles that could help elucidate unclear points in ancient writings. For instance, Desert Fathers speak a lot about "heart", "spirit", "mind", "thoughts", etc., and consider all to be different.
Specifically, I fail at mapping those notions to something more understandable in modern terms. Meister Eckhart, in particular, clearly separates "ground" of the soul ("spark", "castle") from "powers" of the soul (higher intellect, will, lower intellect, emotions, etc.). I don't clearly understand the difference.
Moreover, i sometimes fear that the difference cannot be grasped in verbal terms, because analytical thinking might be constricted to "powers" of the soul in Eckhart's terms. That said, any direction in helping to describe these otherwise ineffable concepts would be useful.