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xlviii sophical reading, and with the strongest emphasis, this charge of omitting vital proofs, I may refer again to Appendix D, as containing, in my reply to him, an additional showing of the fact that the establishment of a priori knowledge, and of what this at bottom consists in, supplies the entire proof required for the system of Rational Pluralism, or, as I still prefer to name it. Personal Idealism. For the removal, or at any rate the easing, of subtler and deeper-reaching difficulties which the system involves, I will refer to Appendix E, where I reply to Mr. McTaggart, to whom I am indebted for the most penetrating appreciation, and the most searching criticisms, that the book has received.

With the foregoing cautions, and the various other aids to a right understanding furnished in the present edition, I shall now leave these essays to their fate. But I must not close without expressing my obligations to the editor of Mind, the editor of Kantstudien, the editor of the International Journal of Ethics, and the editor-in-chief of the New York Daily Tribune, for their kind permission to use the various material now printed in the Appendices.


 * , July, 1904.
 * , July, 1904.