In constructing his social theory Saint-Simon made use of the inductive method: by the study of historical facts he endeavored to win knowledge of the laws of the character and movements of society. In shaping his spiritual program he followed a different path, the path of deduction: his goal was to find a great principle in accordance with which the institutions of the future social order could be consciously molded. “Socrates,” he said, putting his ideas into the mouth of the great Greek, “clearly understood that we must criticize a posteriori and organize a priori.” For “any social regime is an application of a philosophical system, and, consequently, it is impossible to institute a new regime without having before established the new philosophical system to which it should correspond.”