Aristotle's teaching on the subject of happiness has been a topic of intense philosophical. Did he hold that happiness consists of the exercise of all the virtues, moral and intellectual, or that supreme happiness is to be found only in the practice of philosophical contemplation? The question is vital to the relevance of his ethics today. Anthony Kenny helped to set the terms of the debate a quarter of a century ago. Later, in his book The Aristotelian Ethics, he argued that Aristotle's Eudemian Ethics has no less claim than the better-known Nicomachean Ethics...