of our day, is simply not to have philosophized as a man of this age. But to have accepted these doubts without in time coming to find the positive truth that is concealed in them, is to treat them as the innocent favorite of fortune in a fairy tale always at first treats his magic gift. It is something common and dingy, and he lays it carelessly away in his empty house, feeling poorer than ever. But see: handle it rightly, and the fairy gift fills your transfigured home with a wealth of gems and gold, and spreads for you a wondrous banquet. To the author has come the fancy that modern doubt may be some such fairy gift as this. And he would like to suggest to some reader what may possibly prove the right fashion of using the talisman.
The general reader, if very "benevolent," may be able to endure the "First Book" of the present volume in its entirety; but in the "Second Book" he will find much that is meant only for the student whose interests are decidedly technical. Some warnings are given in the text, to help the general reader in skipping. But perhaps it may be well for his purpose to confine himself at once in this Book II., at least upon the first reading, to the following passages, namely: in Chapter VIII., to the introductory remarks and the first and the last sections of the chapter; in Chapter IX., to the introductory re-
