Accompanied by a new translation of Aristotle's Nicomachean Ethics X, this volume presents a hybrid between a traditional commentary and a scholarly monograph. Aristotle's text is divided into one hundred lemmata which not only explore comprehensively the content and strength of each of these units of thought, but also emphasise their continuity, showing how the smaller units feed into the larger structure. The Commentary illuminates what Aristotle thinks in each lemma (and why), and also shows how he thinks. In order to bring Aristotle alive as a thinker, it often explores several possible ways of reading the text to enable the reader to make up their own mind about the best interpretation of a given passage. The relevant background in Plato's dialogues is discussed, and a substantial Introduction sets out the philosophical framework necessary for understanding Book X, the final and most arresting section of the Ethics.