Aristotle (2024). Nicomachean Ethics. Second Edition. Translated With Introduction and Notes By C. D. C. Reeve Indianapolis/Cambridge: Hackett Publishing Company. 5. The Route the Nicomachean Ethics Takes On the basis of the function argument (NE 1097b22–1098a20), Aristotle defines happiness as (roughly speaking) rational activity in accord with virtue. Although he doesn’t explicitly identify t..