The Nicomachean Ethics

Focusing on the cultivation of virtuous character, Aristotle's work explores the nature of happiness, defining it as 'activity of the soul in accordance with virtue.' He delves into both moral virtues, like courage and justice, and intellectual virtues, such as wisdom and knowledge. The text also examines practical reasoning, the value of pleasure, various forms of friendship, and the interplay between individual virtue and society. This foundational work has significantly shaped Western ethical thought throughout history.