NOTE : About concept. "Regarding rational thinking, man no more wants to admit that it has as a condition the study of forms of syllogisms, that to be prepared to admit he would be able to digerate without any knowledge of anatomy nor physiology. As the study of anatomy and physiology can be useful for dietetic reasons, the study of rational forms can unquestionably be even more useful with its effects on the accuracy of thinking. It can be admitted that the study having as an object the operating modes of reason and its rules is in itself of a greater interest, most probably no less great than the knowledges of nature's laws and its peculiar structures. As we find the discovery of a sixty species of parrots, 157 varieties of veronicas a non-insignificant discovery, we must consider as even more non-insignificant the discovery of reason's forms: isn't the figure of syllogism infinitely superior to a variety of parrots or veronicas?" Hegel Logic.