Aristotle's Nicomachean Ethics, a foundational work in Western philosophy concerned with defining virtue, happiness (eudaimonia), and the good life for human beings. Aristotle analyzes various moral and intellectual virtues as means between extremes, exploring concepts like justice, courage, temperance, and practical wisdom (phronesis). The work investigates voluntary action, choice, and responsibility, and considers the role of reason and character in achieving a flourishing existence. Additionally, there are introductory materials from the Oxford World's Classics edition, which provide context about Aristotle's life and work, the publication history of this edition, and a brief overview of the content of each book within the Ethics.