Unique to moral virtue is the emphasis on habituation to establish a disposition to action. The point of training through practice is to produce the habit to motivate action. In the cases of moderation and bravery or courage, acting in that way produces someone who is that kind of person. The just man, for example, does what is just knowing that it is and wanting to act justly because it is just. Human beings are, like other animals, naturally creatures of pleasure and pain.
Moral virtue is the habituation of pleasure and pain.
The habituation of agent to moral virtue consists in shaping the agent's relation to these primary motives of pleasure seeking and pain avoidance. It is necessary, therefore, to redirect and mold the original hedonic motivation by habituation to the morally correct objects of pleasure and pain. Thus, moral virtue is the habituation of the agent to the exercise of rationality in relation to hedonic motives and other natural feelings such as anger. Virtue is the habit which establishes in the individual an attitude towards or way of relating to and dealing with the passions and other natural desires. Virtue is the mean as intermediate between extremes of pleasure and pain.