The treatment of Justice in Book V has always been a source of great difficulty to students of the _Ethics_. Almost more than any other part of the work it has exercised influence upon mediaeval and modern thought upon the subject. The distinctions and divisions have become part of the stock-in-trade of would be philosophic jurists. And yet, oddly enough, most of these distinctions have been misunderstood and the whole purport of the discussion misconceived. Aristotle is here dealing with justice in a restricted sense viz as that special goodness of character which is required of every adult citizen and which can be produced by early discipline or habituation. It is the temper or habitual attitude demanded of the citizen for the due exercise of his functions as taking part in the administration of the civic community—as a member of the judicature and executive. The Greek citizen was only exceptionally, and at rare intervals if ever, a law-maker while at any moment he might be called upon to act as a judge (juryman or arbitrator) or as an administrator. For the work of a legislator far more than the moral virtue of justice or fairmindedness was necessary, these were requisite to the rarer and higher “intellectual virtue” of practical wisdom. Then here, too, the discussion moves on a low level, and the raising of fundamental problems is excluded. Hence “distributive justice” is concerned not with the large question of the distribution of political power and privileges among the constituent members or classes of the state but with the smaller questions of the distribution among those of casual gains and even with the division among private claimants of a common fund or inheritance, while “corrective justice” is concerned solely with the management of legal redress. The whole treatment is confused by the unhappy attempt to give a precise mathematical form to the principles of justice in the various fields distinguished. Still it remains an interesting first endeavour to give greater exactness to some of the leading conceptions of jurisprudence.