the introductory essay, that the intelligible character of every man is to be regarded as an act of will outside time, and therefore indivisible and unchangeable, and the manifestation of this act of will developed and broken up in time and space and all the forms of the principle of sufficient reason is the empirical character as it exhibits itself for experience in the whole conduct and life of this man. As the whole tree is only the constantly repeated manifestation of one and the same tendency, which exhibits itself in its simplest form in the fibre, and recurs and is easily recognised in the construction of the leaf, shoot, branch, and trunk, so all a man’s deeds are merely the constantly repeated expression, somewhat varied in form, of his intelligible character, and the induction based on the sum of all these expressions gives us his empirical character. For the rest, I shall not at this point repeat in my own words Kant’s masterly exposition, but presuppose it as known. In the year 1840 I dealt with the important chapter on the freedom of the will, thoroughly and in detail, in my crowned prize-essay upon the subject, and exposed the reason of the delusion which led men to imagine that they found an empirically given absolute freedom of the will, that is to say, a _liberum arbitrium indifferentiæ_, as a fact in self-consciousness; for the question propounded for the essay was with great insight directed to this point. Therefore, as I refer the reader to that work, and also to the tenth paragraph of the prize-essay on the basis of morals, which was published along with it under the title “The Two Fundamental Problems of Ethics,” I now omit the incomplete exposition of the necessity of the act of will, which was given at this place in the first edition. Instead of it I shall explain the delusion mentioned above in a brief discussion which is presupposed in the nineteenth chapter of the supplement to the present work, and therefore could not be given in the prize-essay referred to.