On the contrary, the sophists confused and disputed everything. They frivolously flouted all truth and research. This same frivolousness now relies upon Kant who, misled by the prejudice of his time, removed truth to a transcendental world and therefore deprecatingly called our actual world the "world of phenomena." In distinction from him, our logic teaches that the phenomena of this world without exception are parts of the one truth, and that the true art of understanding consists in studying the parts. The doctrine of the sophists to the effect that everything may be denied and disputed has a certain similarity with ours in that we declare that the universe is the truth and all parts of it true parts, that smoke and fog, reason and imagination, dreams and realities, subject and object, are true parts of the world. They are not the whole truth, but still true. For this reason it is well to call your attention to the difference between the sophistical and the logical method of thought. The contemporaries of Socrates are still alive to-day. They are teaching in the name of God and believe in nothing, while to us truth, every day naked and sober truth, is sacred. THIRTEENTH LETTER In his "Three Books On The Soul," Aristotle discussed at length the question whether the human soul has five senses or one. The commentator, J. H. von Kirchmann, the publisher of the "Philosophical Library," remarks in his footnote 172 that man has six senses. He divides feeling into pure and active feeling. According to this, the phrase of the five senses belongs to the old iron the same as that of the four elements. Now neither you, nor I, nor any reader should worry about the question whether all sensation may be summed up in the one sense of feeling, whether there are five senses according to Aristotle, or six according to Kirchmann, or whether there is even a seventh sense for the transcendental, the organ of which, as some optimists hope, will gradually be developed with the growing perfection of man. We are concerned in this matter only so far as it is connected with the cardinal question, whether the world is only one thing or a mere collection of an infinite number of disconnected things; whether the so-called things are independent subjects and objects, or whether they are only predicates of the one world subject. Looking through the window I see the river, the street, the bridge, houses, and trees. Everything is a thing in itself and yet is connected inseparably with all others. The qualities of the world are regarded by the intellect as subjects; but the intelligent subject should also know that its actions, its distinguishing and understanding, are formalities, a formal dismemberment of the absolute, which in spite of all division always remains the undivided whole.