This brief introduction serves as a guide to the study of classical logic and its history.

Its subject is logic, which is expressed using terms of natural language, in contrast to modern mathematical logic, which is formalized and developed with symbolic notation.

According to Aristotle's virtue theory, for a person to become virtuous, following the reasoning that characterizes the functioning of the mind, they must choose the mean between deficiency and excess.

By acting in this way, they will be able to reach happiness, which is the goal of every person's life.