ON CATEGORY OF SUBSTANCE, CONDITIONS OF ITS BEING AND COGNITION ACCORDING TO ARISTOTLE
Tatyana DenisovaThe subject of this issue is a question on a substance of every being, its specific features and conditions of its cognition and existence. This is an attempt to systematize Aristotle's point of view about this problem, presented in different fragments of his treatises "Physics", "Metaphysics", "Categories", "On the Soul". Aristotle pointed out the fallacy of identifying the substance and any beings. He explained, that not any being can be considered as a substance, though sometimes it's rather difficult to distinguish them. Aristotle offered different classifications of kinds of substance and examined their main features and conditions of their being. Two approaches about comprehension of substances are compared in this article. Socrates and Plato’s position is based on the principle of the direct speculative comprehension. Aristotle offered the system of categories as the universal way for description and cognition of the essence of any substance. To be means to be as a definite "what" in a completeness of its "whatness". Everything can exist only as a definite something. Instead, a problem of possibility of changes and movement of substances is discussed in a comparison of positions of Aristotle and Plato. After all we can see the being of substances not to be a simple static presence of empty pure forms, no having any material substratum. They presented a unity of the intention to achieve its entelecheia and achievement of one, i.e. a unity of the goal, process and result.