It has been considered that the subject of this work might have been treated with more depth of metaphysical disquisition; and there has since appeared an attempt to combine with this investigation the medical science. A work, however, should be judged by its design and its execution, and not by any preconceived notion of what it ought to be according to the critic, rather than the author. The nature of this work is dramatic rather than metaphysical. It offers a narration or a description; a conversation or a monologue; an incident or a scene. Perhaps I have sometimes too warmly apologised for the infirmities of men of genius. From others we may hourly learn to treat with levity the man of genius because he is _only_ such. Perhaps also I may have been too fond of the subject, which has been for me an old and a favourite one--I may have exalted the literary character beyond the scale by which society is willing to fix it. Yet what is this Society, so omnipotent, so all judicial? The society of to-day was not the society of yesterday. Its feelings, its thoughts, its manners, its rights, its wishes, and its wants, are different and are changed: alike changed or alike created by those very literary characters whom it rarely comprehends and often would despise. Let us no longer look upon this retired and peculiar class as useless members of our busy race. There are mental as well as material labourers. The first are not less necessary; and as they are much rarer, so are they more precious. These are they whose "published labours" have benefited mankind--these are they whose thoughts can alone rear that beautiful fabric of social life, which it is the object of all good men to elevate or to support. To discover truth and to maintain it,--to develope the powers, to regulate the passions, to ascertain the privileges of man, --such have ever been, and such ever ought to be, the labours of AUTHORS! Whatever we enjoy of political and private happiness, our most necessary knowledge as well as our most refined pleasures, are alike owing to this class of men; and of these, some for glory, and often from benevolence, have shut themselves out from the very beings whom they love, and for whom they labour. Upwards of forty years have elapsed since, composed in a distant county, and printed at a provincial press, I published "An Essay on the Manners and Genius of the Literary Character." To my own habitual and inherent defects were superadded those of my youth. The crude production was, however, not ill received, for the edition disappeared, and the subject was found more interesting than the writer.