Preface to the First Edition

I propose to state here how this book is to be read, in order that it may be thoroughly understood. What is to be imparted by it is a single thought. Yet in spite of all my efforts, I have not been able to find a shorter way of imparting that thought than the whole of this book. I consider this thought to be that which has been sought for a very long time under the name of philosophy, and that whose discovery is for this very reason regarded by those versed in history as just as impossible as the discovery of the philosophers’ stone, although Pliny had already said to them: Quam multa fieri non posse, priusquam sint facta, judicantur? (Historia naturalis, 7, 1).2

According as we consider under different aspects this one thought that is to be imparted, it appears as what has been called metaphysics, what has been called ethics, and what has been called aesthetics; and naturally it was bound to be all these, if it is what I have already acknowledged it to be.

A system of thought must always have an architectonic connexion or coherence, that is to say, a connexion in which one part always supports the other, though not the latter the former; in which the foundation-stone carries all the parts without being carried by them; and in which the pinnacle is upheld without upholding. On the other hand, a single thought, however comprehensive, must preserve the most perfect unity. If, all the same, it can be split up into parts for the purpose of being communicated, then the connexion of these parts must once more be organic, i.e., of such a kind that every part supports the whole just as much as it is supported by the whole; a connexion in which no part is first and no part last, in which the whole gains in clearness from every part, and even the smallest part cannot be fully understood until the whole has been first understood. But a book must have a first and a last line, and to this extent will always remain very unlike an organism, however like one its con-tents may be. Consequently, form and matter will here be in contradiction.

It is self-evident that in such circumstances, in order that the thought expounded may be fathomed, no advice can be given other than to read the book twice, and to do so the first time with much patience. This patience is to be derived only from the belief, voluntarily accorded, that the beginning presupposes the end almost as much as the end the beginning, and that every earlier part presupposes the later almost as much as the later the earlier. I say “almost,” for it is by no means absolutely so; and whatever it was possible to do to give priority to that which is in any case explained by what follows, and generally whatever might contribute to the greatest possible comprehensibility and clearness, has been honestly and conscientiously done. Indeed, I might to a certain extent have succeeded, were it not that the reader, as is very natural, thinks when reading not merely of what is at the moment being said, but also of its possible consequences. Thus besides the many contradictions of the opinions of the day, and presumably of the reader also, that actually exist, as many others may be added that are anticipated and imaginary. That, then, which is mere misunderstanding, must show itself as lively disapproval, and it is the less recognized as misunderstanding because, while the laboriously attained clearness of explanation and distinctness of expression never leave one in doubt about the direct meaning of what is said, yet they cannot express its relations to all that remains. Therefore, as I have said, the first reading demands patience, derived from the confidence that with a second reading much, or all, will appear in quite a different light. Moreover, the earnest desire for fuller and even easier comprehension must, in the case of a very difficult subject, justify occasional repetition. The structure of the whole, which is organic and not like a chain, in itself makes it necessary sometimes to touch twice on the same point. This construction and the very close interconnexion of all the parts have not allowed of that division into chapters and paragraphs which I usually value so much, but have obliged me to be content with four principal divisions, four aspects, as it were, of the one thought. In each of these four books we have specially to guard against losing sight, among the details that must needs be discussed, of the principal thought to which they belong, and of the progress of the exposition as a whole. And thus is expressed the first, and like those that follow, absolutely necessary, demand on the reader, who is unfriendly towards the philosopher just because he is one himself.

The second demand is that the introduction be read before the book itself, although this is not a part of the book, but appeared five years previously under the title On the Fourfold Root of the Principle of Sufficient Reason: a Philosophical Essay. Without an acquaintance with this introduction and propaedeutic, it is quite impossible to understand the present work properly, and the subject-matter of that essay is always presupposed here as if it were included in the book. Moreover, if it had not preceded this work by several years, it would not be placed at the front of it as an introduction, but would be incorporated in the first book, since this book lacks what was said in the essay, and exhibits a certain incompleteness because of these omissions, which must always be made good by reference to that essay. However, my dislike of quoting myself, or of laboriously expressing once again in different words what had already been said adequately once, was so great that I preferred this course, despite the fact that I could now give the subject-matter of that essay a somewhat better presentation, particularly by clearing it of many conceptions which arose from my excessive preoccupation at that time with the Kantian philosophy, such as categories, outer and inner sense, and the like. But even there those conceptions occur only because I had as yet never really entered deeply into them, and therefore only as a secondary affair quite unconnected with the principal matter. For this reason, the correction of such passages in that essay will come about quite automatically in the reader’s thoughts through his acquaintance with the present work. But only if through that essay we have fully recognized what the principle of sufficient reason is and signifies, where it is valid and where it is not, that it is not prior to all things, and that the whole world exists only in consequence of and in conformity to it, as its corollary so to speak; that rather it is nothing more than the form in which the object, of whatever kind it may be and always conditioned by the subject, is everywhere known in so far as the subject is a knowing individual; only then will it be possible to enter into the method of philosophizing which is here attempted for the first time, differing completely as it does from all previous methods.

But the same dislike to quote myself word for word, or to say exactly the same thing a second time in other and less suitable terms, after I had already made use of better ones, has been the cause of yet a second omission in book one of this work. For I have left out all that is to be found in the first chapter of my essay On Vision and Colours, which otherwise would have found its place here, word for word. Therefore an acquaintance with that short earlier work is also presupposed.

Finally, the third demand to be made on the reader might even be taken for granted, for it is none other than an acquaintance with the most important phenomenon which has appeared in philosophy for two thousand years, and which lies so close to us, I mean the principal works of Kant. Indeed, I find, as has already been said on other occasions, that the effect those works produce in the mind to which they really speak is very like that of an operation for cataract on a blind man. If we wish to continue the simile, my purpose can be described by saying that I wanted to put into the hands of those on whom that operation has been successful a pair of cataract spectacles, for the use of which that operation itself is the most necessary condition. Therefore, while I start in large measure from what was achieved by the great Kant, serious study of his works has nevertheless enabled me to discover grave errors in them. I had to separate these and show them to be objectionable, in order that I might presuppose and apply what is true and excellent in his doctrine, pure and clarified of them. But in order not to interrupt and confuse my own exposition by frequent polemics against Kant, I have put this into a special appendix. And just as, according as I have said, my work presupposes an acquaintance with the Kantian philosophy, so too does it presuppose an acquaintance with that appendix. Therefore, in this respect, it would be advisable to read the appendix first, the more so as its subject-matter has special reference to book one of the present work. On the other hand, it could not from the nature of the case be avoided that even the appendix should refer now and again to the main text. The result of this is simply that the appendix, as well as the main part of the work, must be read twice.

Kant’s philosophy is therefore the only one with which a thorough acquaintance is positively assumed in what is to be here discussed. But if in addition to this the reader has dwelt for a while in the school of the divine Plato, he will be the better prepared to hear me, and the more susceptible to what I say. But if he has shared in the benefits of the Vedas, access to which, opened to us by the Upanishads, is in my view the greatest advantage which this still young century has to show over previous centuries, since I surmise that the influence of Sanskrit literature will penetrate no less deeply than did the revival of Greek literature in the fifteenth century; if, I say, the reader has also already received and assimilated the divine inspiration of ancient Indian wisdom, then he is best of all prepared to hear what I have to say to him. It will not speak to him, as to many others, in a strange and even hostile tongue; for, did it not sound too conceited, I might assert that each of the individual and disconnected utterances that make up the Upanishads could be derived as a consequence from the thought I am to impart, although conversely my thought is by no means to be found in the Upanishads.

But most readers have already grown angry with impatience, and have burst into a reproach kept back with difficulty for so long. Yet how can I dare to submit a book to the public under demands and conditions of which the first two are presumptuous and quite immodest, and this at a time when there is so general an abundance of characteristic ideas that in Germany alone such ideas are made common property through the press every year, in three thousand substantial, original, and absolutely indispensable works, as well as in innumerable periodicals, and even daily papers; at a time when in particular there is not the slightest deficiency of wholly original and profound philosophers, but in Germany alone there are more of them living simultaneously than several successive centuries have had to show? How are we to reach the end, asks the indignant reader, if we must set to work on a book with so much trouble and detail?

As I have not the least thing to say in reply to such reproaches, I hope only for some gratitude from such readers for having warned them in time, so that they may not waste an hour on a book which it would be useless for them to read unless they complied with the demands I make, and which is therefore to be left alone, especially as on other grounds one could wager a great deal that it can say nothing to them, but on the contrary will always be only paucorum hominum, and must therefore wait in calm and modesty for the few whose unusual mode of thought might find it readable. For apart from its intricacies, difficulties, and the efforts it demands of the reader, what cultured man of this age, whose knowledge has almost reached the magnificent point where the paradoxical and the false are all one and the same to him, could bear to meet on almost every page thoughts which directly contradict what he himself has nevertheless established once for all as true and settled? And then how unpleasantly disappointed will many a man find himself, when he comes across no mention of what he thinks he must look for just in this place, because his way of speculating coincides with that of a great philosopher still living.³ This man has written truly pathetic books, and his single trifling weakness is that he regards as fundamental inborn ideas of the human mind everything that he learnt and approved before his fifteenth year. Who could endure all this? Therefore, my advice is simply to put the book aside.

I am afraid, however, that even so I shall not be let off. The reader who has got as far as the preface and is put off by that, has paid money for the book, and wants to know how he is to be compensated. My last refuge now is to remind him that he knows of various ways of using a book without precisely reading it. It can, like many another, fill a gap in his library, where, neatly bound, it is sure to look well. Or he can lay it on the dressing-table or tea-table of his learned lady friend. Or finally he can review it; this is assuredly the best course of all, and the one I specially advise.

And so, after allowing myself the joke to which in this generally ambivalent life hardly any page can be too serious to grant a place, I put my book forth in profound seriousness, confident that, sooner or later, it will reach those to whom alone it can be addressed. For the rest, I am resigned in patience to the fact that the same fate will befall it in full measure which has always fallen to the lot of truth in every branch of knowledge, in the most important branch most of all. To truth only a brief celebration of victory is allowed between the two long periods during which it is condemned as paradoxical, or disparaged as trivial. The author of truth also usually meets with the former fate. But life is short, and truth works far and lives long: let us speak the truth.

Dresden, August 1818