38. The morality of the human act
The singular category of man –which distinguishes and elevates him above other beings of visible creation- is that he is endowed with intelligence and will –he is created in the image and likeness of God-, with freedom to make decisions. But, being creature, his freedom must be harmonized with God and with their fellowmen. This is what the commandments dictate, which are paths of freedom, bringing order to the exercise of creatural freedom so that it be true freedom, harmonized and harmonious with the freedom of others.
Consequently, if there is a legitimate commandment, a man has the obligation to obey and it is not morally free, although it be psychological and physical; if there is no a commandment, he is free to make any decision. Thus, a man has to educate his freedom in order to use it correctly; it means, he has to act like a man exercising the intelligence and the will, but referred to an objective and transcendent rule that directs and regulates his behavior.
Morality, then, is a quality of the human act exercised freely; and it will be positive –good- if it fits to the rule that orders him as a rational being; it will be negative -bad- if he acts irrationally against the rule.