Certain it is that, for a rapid survey of the whole of Nietzsche’s doctrine, no book, save perhaps the section entitled “Of Old and New Tables” in _Thus Spake Zarathustra,_ could be of more real value than _The Twilight of the Idols._ Here Nietzsche is quite at his best. He is ripe for the marvellous feat of the transvaluation of all values. Nowhere is his language—that marvellous weapon which in his hand became at once so supple and so murderous—more forcible and more condensed. Nowhere are his thoughts more profound. But all this does not by any means imply that this book is the easiest of Nietzsche’s works. On the contrary, I very much fear that, unless the reader is well prepared, not only in Nietzscheism, but also in the habit of grappling with uncommon and elusive problems, a good deal of the contents of this work will tend rather to confuse than to enlighten him in regard to what Nietzsche actually wishes to make clear in these pages. How much prejudice, for instance, how many traditional and deep-seated opinions, must be uprooted, if we are to see even so much as an important note of interrogation in the section entitled “The Problem of Socrates”—not to speak of such sections as “Morality as the Enemy of Nature,” “The Four Great Errors,” &c. The errors exposed in these sections have a tradition of two thousand years behind them; and only a fantastic dreamer could expect them to be eradicated by a mere casual study of these pages. Indeed, Nietzsche himself looked forward only to a gradual change in the general view of the questions he discussed; he knew only too well what the conversion of “light heads” was worth, and what kind of man would probably be the first to rush into his arms; and, grand psychologist that he was, he guarded himself beforehand against bad company by means of his famous warning:—“The first adherents of a creed do not prove anything against it.” To the aspiring student of Nietzsche, however, it ought not to be necessary to become an immediate convert in order to be interested in the treasure of thought which Nietzsche here lavishes upon us. For such a man it will be quite difficult enough to regard the questions raised in this work as actual problems. Once, however, he has succeeded in doing this, and has given his imagination time to play round these questions _as_ problems, the particular turn or twist that Nietzsche gives to their elucidation, may then perhaps strike him, not only as valuable, but as absolutely necessary. With regard to the substance of _The Twilight of the Idols,_ Nietzsche says in _Ecce Homo_ (p. 119):—“There is the waste of an all-too-rich autumn in this book: you trip over truths. You even crush some to death, there are too many of them.”