Rationality and reason allow humans to devise complex systems of morality and self development, also know as virtue. Virtuous behavior is the product of rational thought and is in the foreground of human consciousness rather than animalistic survival tendencies. Primitive instincts of survival are even governed by perceptions of virtue. .
Aristotle then objectively defines what he agrees to be virtuous behavior. From the modern perspective, his claims are arrogantly definite, albeit mostly accurate to common western virtuosity. Adequate intellectual and moral development is necessary to fulfill these standards of virtue. Persistency is the key to maintaining a stable force of habit for which people instinctively learn the moral option. A sufficient grasp of various intellects allows a person to be in (apparent) full realization of his surroundings and more assertively independent. Superficially, these are the results of such behavior, but Aristotle believes of something underneath the obcious that exists but is not part of the physical realm. He believes that the soul, among its other functions, becomes consequentially more virtuous with each virtuous act. To clarify, Aristotle's usage of the word soul does not imply anything religious in nature, as the word conjures thoughts of religion and implications of the afterlife, but of one's developing subconscious with the precursor of cognizant choice.
Moderation between two extremes of self-necessity and desire is what Aristotle defines as moral behavior. Either an excess or a deficiency is incongruent with virtuous behavior and he stresses the importance towards total devotion to virtuous behavior. A great portion of the essay gives a blueprint on life, and it gives its readers an extensive list of human indulgences and misdeeds to avoid as Aristotle's not-so-subversive attempt to reform society. Some of his statements justly define virtuous behavior but others unfairly demonize commonly practiced human actions in order to bolster his essay with calculative, unnecessary evidence.