In this volume, Sorin Sabou explores the dependency of happiness on external goods in Aristotle's Nicomachean Ethics. Sabou defends the following thesis: the dependency of happiness on external goods, in EN, is interpreted in the light of its political self-sufficiency, and in the light of our political humanity; this dependency is of three kinds: (1) enhancing-instrumental, (2) constitutive, and (3) subsistent.