Aristotle's <I>Nicomachean Ethics</I> said to be dedicated to Aristotle's son Nicomachus is widely regarded as one of the most important works in the history of Western philosophy. Addressing the question of how men should best live Aristotle's treatise is not a mere philosophical meditation on the subject but a practical examination that aims to provide a guide for living out its recommendations. The result is a deep inquiry into the nature and means of attaining happiness which Aristotle defines as consisting not merely of pleasure or an emotional state but of a virtuous and morally led life. This edition is the translation by W. D. Ross.