His next remark is another of his characteristic doctrines, that the _test of a formed habit of virtue, is to feel no pain_; he that feels pain in brave acts is a coward. Whence he proceeds to illustrate the position, that moral virtue [Greek: aethikae aretae] has to do with pleasures and pains. A virtuous education consists in making us feel pleasure and pain at proper objects, and on proper occasions. Punishment is a discipline of pain. Some philosophers (the Cynics) have been led by this consideration to make virtue consist in apathy, or insensibility; but Aristotle would regulate, and not extirpate our sensibilities (III.). But does it not seem a paradox to say (according to the doctrine of habit in I.), that a man becomes just, by performing just actions; since, if he performs just actions, he is already just? The answer is given by a distinction drawn in a comparison with the training in the common arts of life. That a man is a good writer or musician, we see by his writing or his music; we take no account of the state of his mind in other respects: if he knows how to do this, it is enough. But in respect to moral excellence, such knowledge is not enough: a man may do just or temperate acts, but he is not necessarily a just or temperate man, unless he does them with right intention and on their own account. This state of the internal mind, which is requisite to constitute the just and temperate man, follows upon the habitual practice of just and temperate acts, and follows upon nothing else. But most men are content to talk without any such practice. They fancy erroneously that _knowing_, without doing, will make a good man. [We have here the reaction against the Sokratic doctrine of virtue, and also the statement of the necessity of a _prosper motive_, in order to virtue.] Aristotle now sets himself to find a definition of virtue, _per genus et differentiam_. There are three qualities in the Soul--_Passions_ [Greek: pathae], as Desire, Anger, Fear, &c., followed by pleasure or pain; _Capacities_ or _Faculties_ [Greek: dynameis], as our capability of being angry, afraid, affected by pity, &c.; _Fixed tendencies, acquirements_, or _states_ [Greek: hexeis]. To which of the three does virtue or excellence belong? It cannot be a Passion; for passions are not in themselves good or evil, and are not accompanied with deliberate choice [Greek: prouiresis], will, or intention. Nor is it a Faculty: for we are not praised or blamed because we _can_ have such or such emotions; and moreover our faculties are innate, which virtue is not. Accordingly, virtue, or excellence, must be an acquirement [Greek: hexis]--a State (V.). This is the _genus_.