For the only substantial criticism of the book made by Dr. Royce is that I "borrowed" my whole theory of universals from Hegel--"unconsciously," he has the caution to say; but that qualification does not in the least mitigate the mischievous intention and effect of his accusation as a glaring falsification of fact and artful misdescription of my work. It would be inopportune and discourteous to weary you with philosophical discussions. I exposed the amazing absurdity of Dr. Royce's accusation of plagiarism in the reply to his article which, as appears below, Dr. Royce himself anxiously suppressed, and which I should now submit to you, if he had not at last taken fright and served upon me a legal protest against its circulation. But, to any well-educated man, such an accusation as this refutes itself. It would be just as reasonable, just as plausible, to accuse Darwin of having borrowed his theory of natural selection from Agassiz, or Daniel Webster of having borrowed his theory of the inseparable Union from John C. Calhoun, or ex-President Cleveland of having borrowed his message on tariff reform from the Home Market Club, as to accuse me of having borrowed my theory of universals from Hegel. Hegel's theory of universals is divided from mine by the whole vast chasm between realism and idealism. The two theories contradict each other absolutely, uncompromisingly, irreconcilably: Hegel's is a theory of "absolute idealism" or "pure thought" (_reines Denken_), that is, of _thought absolutely independent of experience_, while mine is a theory of "scientific realism," that is, of _thought absolutely dependent upon experience._ It is quite immaterial here which theory is the true one; the only point involved at present is that the two theories flatly contradict each other, and that it is self-evidently impossible that either _could_ be "borrowed," consciously or unconsciously, from the other. If Dr. Royce had ever done any hard thinking on the theory of universals, or if he had the slightest comprehension of the problems it involves, he would never have been so rash as to charge me with "borrowing" my theory from Hegel, and thus to commit himself irrevocably to a defence of the absurd; but eagerness to accuse another has betrayed him into a position whence it is impossible for him to escape with honor. Solely by misdescribing my philosophy as "essentially idealistic" when it openly and constantly and emphatically avows itself to be essentially realistic, could Dr. Royce give the faintest color of plausibility to his monstrous and supremely ridiculous accusation of plagiarism; solely by presuming upon the public ignorance both of Hegel and of my own work could he dare to publish such an accusation to the world. These gross misrepresentations, however, he did not hesitate to make, since they were necessary in order to pave the way to a third and still grosser misrepresentation on which he apparently had set his heart: namely,