Required reading: G. Lohfink, “How Could an Individual Redeem the Whole World?” in No Irrelevant Jesus (Collegeville, MN: Liturgical Press, 2013), 90-104, copy in the Christology FileBox at the Arnoldus Lib. See my sketch here.
Texts: John of Damascus, Honorius of Autun, Thomas Aquinas, and Gregory Palamas
Anselm's Cur Deus Homo (excerpt)
Saint Francis of Assisi (reported by Paulo Nazareno, OFMCap)