Nicolai Hartmann, in an interesting discussion of Aristotle’s account of moral virtue, has called attention to the difference between the contrariety of opposed vices and the contrast of certain virtues. The äκρa or extremes, somewhere between which Aristotle thought that any morally virtuous disposition (with the possible exception of justice) must lie, are not conciliable. The same man cannot combine or reconcile, in the same action, cowardice and bravery, intemperance and insensibility, stinginess and thriftlessness, passion and lack of spirit. These are pairs of contraries, between which a virtue lies; but the virtue is not a synthesis of the extremes in a pair.