Abstract

After Kant, the school which further developed Kant's philosophy is the neo-kantianism. This neo-kantianism scholarship is characterized by the simultaneous development of Kant's epistemological and ontological problems. The ontological problem developed around Hartmann, and the epistemological problem developed around Cohen. Here we can see Cohen's achievements. Cohen completes epistemology in Logic of pure awareness(Logik der reinen Erkenntnis). In order to establish his own epistemology, Cohen first completes the problem of aspect category. And Cohen brings the problem of this aspect category in the form of Plato and Aristotle. He connects these aspect categories and Kant's aspect categories. Like this, Cohen completes his perception logic in this aspect category. Plato, Aristotle, and Kant have different categories. Cohen first deals with the problem of the aspect based on the epistemology based on Plato's a priori. Next, he accepts metaphysical aspects of Aristotle's ten categories. Kant's aspect category is different from the other two philosophers. It is, soon, the basis of judgment. Cohen accepts Kant's aspect category of the very basis of his judgment for his epistemology. In this article, we first look at how Cohen embraced Plato, Aristotle, and Kant's view categories for his cognitive logic, and then see how he completed his aspect category. Whether epistemological or ontological, the construction of aspect category is for category theory, which is ultimately related to the laws of nature. Cohen also completes his categorization system in 12 categories, like Kant, centering on three aspect categories. Aristotle's ten categories, Kant's twelve categories, and Cohen's twelve categories eventually start with judgment. And so far, the number of these categories has been limited to twelve. Cohen argues that the number of these categories is likely to increase sufficiently. As science develops and societies become more complex, the number of categories is not as limited as Aristotle and Kant's view, but has the idea that there can be as many. Cohen explains his thoughts as Judgment of Methodology(Ureile der Methodik). We find here the merits of Cohen's cognitive logic. However, Cohen did not leave his view of the increasing number of categories or numbers. This is his disadvantage. The conclusion of this paper is to point out a problem with Cohen's aspect category by discussing the possibility of expanding or increasing the number of categories claimed by Cohen.