You will perhaps wonder why all my instructions are pointed towards the Censure, and not the Praise, of Books; but many reasons might be given why it should be so. The chief are, that this part is both easier, and will sell better. Let us hear the words of Mr BURKE on a subject not very dissimilar: "In such cases," says he, "the Writer has a certain fire and alacrity inspired into him by a consciousness that (let it fare how it will with the subject) his ingenuity will be sure of applause: and this alacrity becomes much greater, if he acts upon the offensive; by the impetuosity that always accompanies an attack, and the unfortunate propensity which mankind have to finding and exaggerating faults." Pref., _Vindic. Nat. Soc_., p. 6. You will perceive that I have on no occasion sanctioned the baser motives of private pique, envy, revenge, and love of detraction. At least I have not recommended harsh treatment upon any of these grounds. I have argued simply on the abstract moral principle which a Reviewer should ever have present to his mind: but if any of these motives insinuate themselves as secondary springs of action, I would not condemn them. They may come in aid of the grand Leading Principle, and powerfully second its operation. But it is time to close these tedious precepts, and to furnish you with, what speaks plainer than any precept, a Specimen of the Art itself, in which several of them are embodied. It is hastily done: but it exemplifies well enough what I have said of the Poetical department; and exhibits most of those qualities which disappointed Authors are fond of railing at, under the names of Flippancy, Arrogance, Conceit, Misrepresentation, and Malevolence: reproaches which you will only regard as so many acknowledgments of success in your undertaking; and infallible tests of an established fame, and [a] rapidly increasing circulation. _L'Allegro_. A Poem. By JOHN MILTON. No Printer's name.