The contributions in this volume present new ideas about the reception of Aristotle's Ethics in the late antique period, especially by Alexander of Aphrodisias and his school. From the many interesting questions considered by these articles, three principal topics emerge: Alexander's exegetical method; the relationship between Alexander and opposing philosophical schools (Epicurean and Stoic); and, above all, the tendency to apply principles of science--precise definitions, logical coherence, and proofs--to Aristotelian ethics.