Synthesized answer
The "Fourfold Root" is considered the key to understanding Arthur Schopenhauer's philosophy, including "Die Welt als Wille und Vorstellung" [2]. Schopenhauer himself repeatedly insisted on a thorough knowledge of his "Fourfold Root" as an indispensable condition for a right comprehension of his meaning [2, 5]. The treatise is described as having great importance for a profound and correct knowledge of his philosophy, to the point where it may be doubted whether the translation of his chief work can contribute much to the appreciation of his system without its help [2].
The "Fourfold Root" divides all objects or representations into four classes, within which the Principle of Sufficient Reason reigns in different forms [1]. While "Will in Nature" is described as a record of confirmations for his doctrine, the "Fourfold Root" is presented as more indispensable for a right understanding of his views [3]. The passages do not detail *how* this key aids understanding "Die Welt als Wille und Vorstellung" beyond stating its crucial role as a prerequisite for comprehension [2, 5].
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
ject means, to know; and to know means, to have representations. Object and representation are one and the same thing. In the "Fourfold Root," therefore, I have divided all objects or representations into four classes, within which the Principle of Sufficient Reason always reigns, though in each class under a different form; nevertheless, the Principle of Sufficient Reason always presupposes the class itself, and indeed, properly speaking, they coincide.[8] Now, in reality, the existence of the Subject of knowing is not an abstract existence. The Subject does not exist for itself and…
e the public, I am aware of the great difficulties of my task, and indeed can hardly hope to do justice to the Author. In fact, had it not been for the considerations I am about to state, I might probably never have published what had originally been undertaken in order to acquire a clearer comprehension of these essays, rather than with a view to publicity. [1] From the fourth edition by Julius Frauenstädt. "Fourfold Root," Leipzig, 1875; "Will in Nature," Leipzig, 1878. The two treatises which form the contents of the present volume have so much importance for a profound and…
of this remarkable thinker, yet whose acquaintance with German does not permit them to read his works in the original. 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…
y. ARTHUR SCHOPENHAUER. FRANKFURT AM MAIN, _September, 1847._ EDITOR'S PREFACE TO THE THIRD EDITION. In the present volume I lay before the public the Third Edition of the "Fourfold Root," including the emendations and additions left by Schopenhauer in his own interleaved copy. I have already had occasion elsewhere to relate that he left copies of all his works thus interleaved, and that he was wont to jot down on these fly-leaves any corrections and additions he might intend inserting in future editions. Schopenhauer himself prepared for the press all that has been…
o his own system, asserting that knowledge to be the indispensable condition for a right comprehension of his meaning. So far as I am aware, neither the "Fourfold Root" nor the "Will in Nature" have as yet found a translator; therefore, considering the dawning interest which has begun to make itself felt for Schopenhauer's philosophy in England and in America, and the fact that no more competent scholar has come forward to do the work, it may not seem presumptuous to suppose that this version may be acceptable to those who wish to acquire a more than superficial knowledge of…