The Legal Sciences, also called Law Sciences, are those that carry out the complex and constant study of the legal system and its application in society. The Legal Sciences make interpretations of the norm and through social phenomena it is determined if they work properly or need to be reformed. The foundation of these sciences is basically the problem between humans. In a community of people, there is interaction and relationships are established, to establish the parameters on which these relationships are based and this law must be fully complied with, otherwise, those who defend justice must act with discipline to enforce it.
Legal Sciences as society progressed along with it, always trying to maintain a step forward with the aim of keeping the relationship between the people of the community and the foreigners with the inhabitants of the population controlled. The history of Roman Law shows us what the life of that individual who wanted to conquer, dominate and expand his power throughout an entire region is like. The different stages of the Roman government (monarchy, republic and empire) show us an interesting feature of the legal sciences in antiquity and when comparing them with what is understood today by law, it gives us to understand the relevance of the facts that were generated in that epoch.
The greatest responsibility that the legal sciences have is to integrate all humans into a rational system of laws that, although it is true, is rooted in customary law, must be maintained in conjunction with a standard of principles and values such as morality, equity and justice. Sustaining in society a balance between objective right (the established norm) and subjective right (man's ability to decide his destiny) can be called an art, a profession that is studied every day, as new situations are those faced the man. The legal sciences are studied by man in different ways, really, what gives so many nuances to the study of law, they arethe cultures, customs and traditions that man carries with him in community.