When I turn from the uninterrupted studies of your domestic solitude to our metropolitan authors, the contrast, if not encouraging, is at least extraordinary. You are not unaware that the revolutions of Society have operated on our literature, and that new classes of readers have called forth new classes of writers. The causes and the consequences of the present state of this fugitive literature might form an inquiry which would include some of the important topics which concern the PUBLIC MIND, --but an inquiry which might be invidious shall not disturb a page consecrated to the record of excellence. They who draw their inspiration from the hour must not, however, complain if with that hour they pass away. I. DISRAELI. INTRODUCTION. For the fifth time I revise a subject which has occupied my inquiries from early life, with feelings still delightful, and an enthusiasm not wholly diminished. Had not the principle upon which this work is constructed occurred to me in my youth, the materials which illustrate the literary character could never have been brought together. It was in early life that I conceived the idea of pursuing the history of genius by the similar events which had occurred to men of genius. Searching into literary history for the literary character formed a course of experimental philosophy in which every new essay verified a former trial, and confirmed a former truth. By the great philosophical principle of induction, inferences were deduced and results established, which, however vague and doubtful in speculation, are irresistible when the appeal is made to facts as they relate to others, and to feelings which must be decided on as they are passing in our own breast. It is not to be inferred from what I have here stated that I conceive that any single man of genius will resemble every man of genius; for not only man differs from man, but varies from himself in the different stages of human life. All that I assert is, that every man of genius will discover, sooner or later, that he belongs to the brotherhood of his class, and that he cannot escape from certain habits, and feelings, and disorders, which arise from the same temperament and sympathies, and are the necessary consequence of occupying the same position, and passing through the same moral existence. Whenever we compare men of genius with each other, the history of those who are no more will serve as a perpetual commentary on our contemporaries. There are, indeed, secret feelings which their prudence conceals, or their fears obscure, or their modesty shrinks from, or their pride rejects; but I have sometimes imagined that I have held the clue as they have lost themselves in their own labyrinth. I know that many, and some of great celebrity, have sympathised with the feelings which inspired these volumes; nor, while I have elucidated the idiosyncrasy of genius, have I less studied the habits and characteristics of the lovers of literature.