This article is studying the dynamics of the relationship between legal positivism and the two divisions of law, respectively private law and public law. Legal positivism, envisions concepts of human intervention in the creation and application of the law, and so it finds application in both public law and private law. However, in private law, there are several principles which can be deduced from the doctrine of natural law, such as substitution, reversibility and others. To the contrary, in public law, legal positivism is all present, manifesting itself in all its branches. It is not, however, an exclusive presence, because there is a balance between natural law and legal positivism in each of the divisions of law. The two orientations o...