The Greek commentary tradition devoted to explicating Aristotle's Nicomachean Ethics (NE) was extensive. It began in antiquity with Aspasius and reached a point of immense sophistication in the twelfth century with the commentaries of Eustratius of Nicaea and Michael of Ephesus, which primarily served educational purposes. The use of Aristotle's ethics in the classroom continued into the late Byzantine period, but until recently scholastic use of...