Political theory never stands by itself. Any theoretical explanation of politics depends on attitudes and positions which stem from metaphysics, theology, ethics, or science. An understanding of the political thought of a man, then, will require some insight into the relationship between his politics and the presuppositions on which it is based. To write about the political theory of Descartes, however, presents special difficulties, for Descartes cannot be considered an important political thinker in his own right. His actual references to politics are scant. His influence on later thinkers did not arise from his thought about politics. Nevertheless, in political theory Descartes must be considered, for it was Descartes who set the patterns of speculative thought after him, including thought about politics. After Descartes the scientific and mechanical orientations of thought replaced the traditional Christian and Aristotelian molds in which politics had been considered.