Philosophy, as a special form of mental activity, seeks to answer these two questions: How is knowledge possible? What is the true nature of reality? The first question deals with the knowing subject and his relation to the Oh jcet. The aim is to give an exposition and a theory of the knowing process and to unfold its implications. The sec ond question deals with the nature of the object viewed as a thing in itself. The first question belongs to the theory of knowledge; the second belongs to metaphysics.