The purpose of this study is to document the process and demonstrate how the quest to lay the foundations for rationality in social thought is older than believed. There are contributions of class. Causation in the Spirit of the Laws. Montesquieu wrote his work in a time where it loomed the first overtones of the intellectual revolution of the Enlightenment: the triumph of rationality over nineteenth-century conceptions of religion and absolutism. The text of the spirit of the law to lay out the foundation in reason and causality in search of human relationships. Thus, it is no mere effect of chance that human societies are organized in certain ways, but the same geographical and socio-economic determine the types of government.

It is the will of God, but natural relations arising from the nature of things (Montesquieu, 1999: 1). For Montesquieu, social relations are necessarily order. Within this apparent chaos, every society, from the advanced even in the most rudimentary, are conducted according to a pattern established in the necessity and nature. In the spirit of the law is appealed to the observation of the facts to determine these causal relationships that determine the state of societies. The goal is to find those persistent elements that influence the formation of each society (Montesquieu, 1999: 2). Montesquieu The explanatory model can be seen more clearly when exposed the causes of social functioning, ie determining those aspects of social reality: the causes physical, social and moral.