Arete (Ἀρετή) is the Greek word for "excellence" or "virtue" — the highest aspiration of Greek ethics. **Arete of Cyrene** (4th c. BCE) was the philosopher who succeeded her father Aristippus as head of the Cyrenaic school — the second-oldest known female philosopher after Aspasia.
Also a queen in Homer's Odyssey (mother of Nausicaa).
Arete reduces to four — the number of Greek virtue.