"Ethics" by Aristotle is a classic philosophical work that delves into the nature of morality and ethics, examining the principles that underlie human behavior and the meaning of a good life. In this book, Aristotle sets out to explore the fundamental questions of ethics, including the nature of happiness, the role of virtues and vices, and the concept of the "good." Throughout the book, Aristotle emphasizes the importance of balance and moderation, arguing that virtues are not absolute, but rather exist on a continuum between two extremes. He also explores the concept of moral responsibility, and the role of individual choice in determining moral behavior.