The Doctrine of the Middle is the Aristotelian writing of the virtues, from Aristotle's Nicomachean Ethics. Aristotle explains virtue as the excellence and goodness of character, in reflection on the good or virtues of an action: “Thus, virtue is an intentional disposition, located in an environment which is relative to us and determined by a rational principle, and by that which a prudent man would use to determine it. It is a happy medium between two kinds of vice, one of excess and the other of defect…” Here Aristotle gives us a glimpse of his provisional explanation of virtue; where you would find virtue and its dependence on the situation. Aristotle argues that it is not a person's actions that reflect their ethics, but that it is actually that person's character that reflects their ethics. It is said that a virtuous person is the product of the examples of virtue he has experienced, it is his training. If a person experiences bad examples of virtue, his virtuous character will not develop: nor are we born vicious. The human being is an ethical blank slate. Aristotle explains that a person's morality and virtues are actually the development of a person's character, that our wickedness and our virtues are the development through character formation; tabula rasa, the epistemological idea that our knowledge comes from our experiences. In accordance with the doctrine of the average, virtue is constituted by the average states of deficiency and excess. It is written that in finding the means of virtue in relation to ourselves, our character must find the right reason it needs. Aristotle presents his idea of ​​the doctrine of wickedness, in his book, The Nicomachean Ethics, Book II. He begins with the analogy: "...excessive and defective exercise destroys strength [...] likewise, drink or food above or below a certain quantity destroys health, while that which is in proportion produces, increases and preserves.