Up to now we have not commented upon Herr Duehring's pompous opinions on final truths of the last instance, sovereignty of the will, absolute certainty of knowledge, and so forth, until the matter could first be brought to an issue. Up to this point the investigation has been useful to show how far the separate assertions of the philosophy of realism had "sovereign validity" and "unrestricted claim to truth" but we now come to the question if any and what product of human knowledge can have in particular "sovereign validity" and "unrestricted claims to truth." If I speak of human knowledge I do not do so as an affront to the dwellers in other worlds whom I have not the honor to know, but only because animals have knowledge also, not sovereign, however. The dog recognises a divinity in his master, who may, however, be a great fool. "Is human thought sovereign?" Before we can answer "yes" or "no" we must first examine what human thought is. Is it the thought of an individual man? No. It exists only as the individual thoughts of many millions of men, past, present and to come. If I now say, having comprehended the thought of all men in the future also under my concept, that it is able to understand the entire universe, if man only lasts long enough, and the organs of perception are unlimited, and the objects to be comprehended have no limits upon their comprehensibility, my statement is banal and barren. The most valuable result of such a conclusion would be to cause in us a tremendous distrust of present day knowledge. Because, to all appearance, we are just standing at the threshold of human history and the generations which will correct us will be much more numerous than those whose knowledge--often with little enough regard,--we ourselves correct. Herr Duehring himself explains the necessity of consciousness, knowledge and perception only becoming apparent in a collection of separate individuals. We can only apply the word sovereignty to the thought of these individuals in so far as we do not know of any force which can defeat thought. But we all know that there is no significance to nor power of interpretation of the sovereign power of the knowledge of the thought of each individual, and, according to our experience, there is much more that requires improvement and correction in it than not. In other words, the sovereignty of thought is realised in a number of highly unsovereign men capable of thinking, the knowledge which has unlimited pretensions to truth is realised in a number of relative blunders; neither the one nor the other can be fully realised except through an endless eternity of human existence.