Abstract

Gabriel Vázquez explained that natural law is properly «the whole of radical or structural requirements of human nature as such, which is biological and rational at the same time». Natural law has also «self-consistency» by its own nature, and not by the consent or will of anyone, not even God. There is a double natural law: the primary one is the rational nature, and the secondary one is the judgment of our reason. This secondary natural law, based on the rational nature —which is our first moral rule—, gives a guideline, a practical judgment about the morality and immorality of human acts. The first is properly rule, the second is properly law. The present study examines this dual intentional structure of natural law.