Now although some portions of both the Essays published in the present volume have of course become antiquated, owing to the subsequent development of the empirical sciences, while others--such as, for instance, Schopenhauer's denunciation of plagiarism in the cases of Brandis and Rosas in the beginning of Physiology and Pathology[2]--can have no interest for the reader of the present day, I have nevertheless given them just as he left them and refrained from all suppression or alteration. And if, on the whole, the "Will in Nature" may be less indispensable for a right understanding of our philosopher's views than the "Fourfold Root," being merely a record of the confirmations which had been contributed during his lifetime by the various branches of Natural Science to his doctrine, that _the thing in itself is the will_, the Second Essay has nevertheless in its own way quite as much importance as the First, and is, in a sense, its complement. For they both throw light on Schopenhauer's view of the Universe in its double aspect as Will and as Representation, each being as it were _a résumé_ of the exposition of one of those aspects. My plea for uniting them in one volume, in spite of the difference of their contents and the wide lapse of time (seventeen years) which lies between them, must be, that they complete each other, and that their great weight and intrinsic value seem to point them out as peculiarly fitted to be introduced to the English thinker. [2] See "Will in Nature," pp. 9-18 of the original; pp. 224-234 of the present translation. In endeavouring to convey the Author's thoughts as he expresses them, I have necessarily encountered many and great difficulties. His meaning, though always clearly expressed, is not always easy to seize, even for his countrymen; as a foreigner, therefore, I may often have failed to grasp, let alone adequately to render, that meaning. In this case besides, the responsibility for any want of perspicuity cannot be shifted by the translator on to the Author; since the consummate perfection of Schopenhauer's prose is universally recognised, even by those who reject, or at least who do not share, his views. An eminent German writer of our time has not hesitated to rank him immediately after Lessing and Göthe as the third greatest German prose-writer, and only quite recently a German professor, in a speech delivered with the intent of demolishing Schopenhauer's philosophy, was reluctantly obliged to admit that his works would remain on account of their literary value. Göthe himself expressed admiration for the clearness of exposition in Schopenhauer's chief work and for the beauty of his style.