the mechanical (according to law) and the apparently intentional effects of nature one and the same ultimate principle, which might serve as the more general ground of explanation of them both. Such a principle I hope I have given by establishing the will as the real thing in itself; and in accordance with it generally in the second book and the supplements to it, but especially in my work “On the Will in Nature,” the insight into the inner nature of the apparent design and of the harmony and agreement of the whole of nature has perhaps become clearer and deeper. Therefore I have nothing more to say about it here. The reader whom this criticism of the Kantian philosophy interests should not neglect to read the supplement to it which is given in the second essay of the first volume of my “Parerga and Paralipomena,” under the title “_Noch einige Erläuterungen zur Kantischen Philosophie_” (Some Further Explanations of the Kantian Philosophy). For it must be borne in mind that my writings, few as they are, were not composed all at once, but successively, in the course of a long life, and with long intervals between them. Accordingly, it must not be expected that all I have said upon one subject should stand together in one place. SUPPLEMENTS TO THE FIRST BOOK. “ ‘Warum willst du dich von uns Allen Und unsrer Meinung entfernen?’ Ich schreibe nicht euch zu gefallen, Ihr sollt was lernen.” —GOETHE. First Half. The Doctrine Of The Idea Of Perception. (To § 1-7 of the First Volume.) Chapter I. The Standpoint of Idealism.