Thus we now meet the view very usually taken of the history of Philosophy which ascribes to it the narration of a number of philosophical opinions as they have arisen and manifested themselves in time. This kind of matter is in courtesy called opinions; those who think themselves more capable of judging rightly, call such a history a display of senseless follies, or at least of errors made by men engrossed in thought and in mere ideas. This view is not only held by those who recognize their ignorance of Philosophy. Those who do this, acknowledge it, because that ignorance is, in common estimation, held to be no obstacle to giving judgment upon what has to do with the subject; for it is thought that anybody can form a judgment on its character and value without any comprehension, of it whatever. But the same view is even held by those who write or have written on the history of Philosophy. This history, considered only as the enumeration of various opinions, thus becomes an idle tale, or, if you will, an erudite investigation. For erudition is, in the main, acquaintance with a number of useless things, that is to say, with that which has no intrinsic interest or value further than being known. Yet it is thought that profit is to be derived from learning the various opinions and reflections of other men. It stimulates the powers of thought and also leads to many excellent reflections; this signifies that now and then it occasions an idea, and its art thus consists in the spinning one opinion out of the other.
If the history of Philosophy merely represented various opinions in array, whether they be of God or of natural and spiritual things existent, it would be a most superfluous and tiresome science, no matter what advantage might be brought forward as derived from such thought-activity and learning. What can be more useless than to learn a string of bald opinions, and what more unimportant? Literary works, being histories of Philosophy in the sense that they produce and treat the ideas of Philosophy as if they were opinions, need be only superficially glanced at to find how dry and destitute of interest everything about them is.
An opinion is a subjective conception, an uncontrolled thought, an idea which may occur to me in one direction or in another: an opinion is mine,[3] it is in itself a universal thought which is existent in and for itself. But Philosophy possesses no opinions, for there is no such thing as philosophical opinions. When we hear a man speaking of philosophical opinions, even though he be an historian of philosophy itself, we detect at once this want of fundamental education. Philosophy is the objective science of truth, it is science of necessity, conceiving knowledge, and neither opinion nor the spinning out of opinions.
The more precise significance of this idea is that we get to know opinions only, thus laying emphasis upon the word Opinion. Now the direct opposite of opinion is the Truth; it is Truth before which mere opinion pales. Those who in the history of Philosophy seek mere theories, or who suppose that on the whole only such are to be found within it, also turn aside when that word Truth confronts them. Philosophy here encounters opposition from two different sides. On the one hand piety openly declares Reason or Thought to be incapable of apprehending what is true, and to lead only to the abyss of doubt; it declares that independent thought must be renounced, and reason held in bounds by faith in blind authority, if Truth is to be reached. Of the relation existing between Religion and Philosophy and of its history, we shall deal later on. On the other hand, it is known just as well, that so-called reason has maintained its rights, abandoning faith in mere authority, and has endeavoured to make Christianity rational, so that throughout it is only my personal insight and conviction which obliges me to make any admissions. But this affirmation of the right of reason is turned round in an astonishing manner, so that it results in making knowledge of the truth through reason an impossibility. This so-called reason on the one hand has combated religious faith in the name and power of thinking reason, and at the same time it has itself turned against reason and is true reason’s adversary. Instinct and feeling are maintained by it against the true reason, thus making the measure of true value the merely subjective—that is a particular conviction such as each can form in and for himself in his subjective capacity. A personal conviction such as this is no more than the particular opinion that has become final for men.
If we begin with what meets us in our very first conceptions, we cannot neglect to make mention of this aspect in the history of Philosophy. In its results it permeates culture generally, being at once the misconception and true sign of our times. It is the principle through which men mutually understand and know each other; an hypothesis whose value is established and which is the ground of all the other sciences. In theology it is not so much the creed of the church that passes for Christianity, as that every one to a greater or less degree makes a Christianity of his own to tally with his conviction. And in history we often see theology driven into acquiring the knowledge of various opinions in order that an interest may thus be furnished to the science, and one of the first results of the attention paid them is the honour awarded to all convictions, and the esteem vouchsafed to what has been constituted merely by the individual. The endeavour to know the Truth is then of course relinquished. It is true that personal conviction is the ultimate and absolute essential which reason and its philosophy, from a subjective point of view, demand in knowledge. But there is a distinction between conviction when it rests on subjective grounds such as feelings, speculations and perceptions, or, speaking generally, on the particular nature of the subject, and when it rests on thought proceeding from acquaintance with the Notion and the nature of the thing. In the former case conviction is opinion.
This opposition between mere opinion and truth now sharply defined, we already recognize in the culture of the period of Socrates and Plato—a period of corruption in Greek life—as the Platonic opposition between opinion δόξα and Science ἐπιστήμη. It is the same opposition as that which existed in the decadence of Roman public and political life under Augustus, and subsequently when Epicureanism and indifference set themselves up against Philosophy. Under this influence, when Christ said, “I came into the world that I should bear witness unto the Truth,” Pilate answered, “What is Truth?” That was said in a superior way, and signifies that this idea of truth is an expedient which is obsolete: we have got further, we know that there is no longer any question about knowing the Truth, seeing that we have gone beyond it. Who makes this statement has gone beyond it indeed. If this is made our starting point in the history of Philosophy, its whole significance will consist in finding out the particular ideas of others, each one of which is different from the other: these individual points of view are thus foreign to me: my thinking reason is not free, nor is it present in them: for me they are but extraneous, dead historic matter, or so much empty content, and to satisfy oneself with empty vanity is mere subjective vanity itself.
To the impartial man, the Truth has always been a heart-stirring word and one of great import. As to the assertion that the Truth cannot be known, we shall consider it more closely in the history of Philosophy itself where it appears. The only thing to be here remarked is that if this assumption be allowed, as was the case with Tennemann, it is beyond conception why anyone should still trouble about Philosophy, since each opinion asserts falsely in its turn that it has found the truth. This immediately recalls to me the old belief that Truth consists in knowledge, but that an individual only knows the Truth in so far as he reflects and not as he walks and stands: and that the Truth cannot be known in immediate apprehension and perception, whether it be external and sensuous, or whether it be intellectual perception (for every perception as a perception is sensuous) but only through the labour of thought.
b. Proof of the futility of Philosophical Knowledge obtained through the History of Philosophy itself.
From another point of view another consequence ensues from the above conception of the history of Philosophy which may at will be looked at as an evil or a benefit. In view of such manifold opinions and philosophical systems so numerous, one is perplexed to know which one ought to be accepted. In regard to the great matters to which man is attracted and a knowledge of which Philosophy would bestow, it is evident that the greatest minds have erred, because they have been contradicted by others. “Since this has been so with minds so great, how then can ego homuncio attempt to form a judgment?” This consequence, which ensues from the diversity in philosophical systems, is, as may be supposed, the evil in the matter, while at the same time it is a subjective good. For this diversity is the usual plea urged by those who, with an air of knowledge, wish to make a show of interest in Philosophy, to explain the fact that they, with this pretence of good-will, and, indeed, with added motive for working at the science, do in fact utterly neglect it. But this diversity in philosophical systems is far from being merely an evasive plea. It has far more weight as a genuine serious ground of argument against the zeal which Philosophy requires. It justifies its neglect and demonstrates conclusively the powerlessness of the endeavour to attain to philosophic knowledge of the truth. When it is admitted that Philosophy ought to be a real science, and one Philosophy must certainly be the true, the question arises as to which Philosophy it is, and when it can be known. Each one asserts its genuineness, each even gives different signs and tokens by which the Truth can be discovered; sober reflective thought must therefore hesitate to give its judgment.
This, then, is the wider interest which the history of Philosophy is said to afford. Cicero (De natura Deorum I. 8 sq.) gives us from this point of view, a most slovenly history of philosophic thought on God. He puts it in the mouth of an Epicurean, but he himself knew of nothing more favourable to say, and it is thus his own view. The Epicurean says that no certain knowledge has been arrived at. The proof that the efforts of philosophy are futile is derived directly from the usual superficial view taken of its history; the results attendant on that history make it appear to be a process in which the most various thoughts arise in numerous philosophies, each of which opposes, contradicts and refutes the other. This fact, which cannot be denied, seems to contain the justification, indeed the necessity for applying to Philosophy the words of Christ, “Let the dead bury their dead; arise, and follow Me.” The whole of the history of Philosophy becomes a battlefield covered with the bones of the dead; it is a kingdom not merely formed of dead and lifeless individuals, but of refuted and spiritually dead systems, since each has killed and buried the other. Instead of “Follow thou Me,” here then it must indeed be said, “Follow thine own self”—that is, hold by thine own convictions, remain steadfast to thine own opinion, why adopt another?