The two expressions signify something different from this. Idealism and materialism, originally not used in any other sense, are not here employed in any other sense. We shall see what confusion arises when one tries to force another signification into them. The question of the relationship of thinking and being has another side; in what relation do our thoughts with regard to the world surrounding us stand to this world itself? Is our thought in a position to recognize the real world? Can we, in our ideas and notion of the real world, produce a correct reflection of the reality? This question is called in philosophical language the question of the identity of thinking and being, and is affirmed by the great majority of philosophers. According to Hegel, for example, its affirmation is self-evident, for that which we know in the actual world is its content, according to our thought, that which compels the world to a progressive realization as it were of the absolute Idea, which absolute idea has existed somewhere, unattached from the world and before the world; and that thought can recognize a content which is already a thought content herein, from the beginning, appears self-evident. It is also evident that what is here to be proved is already hidden in the hypothesis. But that does not hinder Hegel, by any means, from drawing the further conclusion from his proof of the identity of thought and existence that his philosophy, because correct for his thought, is, therefore, the only correct one, and that the identity of thought and existence must show itself in this, that mankind should forthwith translate his philosophy from theory to practice and the whole world shift itself to a Hegelian base. This is an illusion which he shares alike with all philosophers.