The result of his examination not just of the concepts of quality and relation but of all the other concepts he deals with consists in the verdict that all attempts to capture the true nature of reality in terms of these categories are futile because all these concepts are unintelligible, inconsistent and in the end self-contradictory. This means that what is designated by means of them cannot be real, but can only reflect the way the world appears to us, not the way it really is. This diagnosis