There is no subject in critical learning more copious than this of the just mixture of simplicity and refinement in writing; and, therefore, not to wander in too large a field, I shall confine myself to a few general observations on that head.
First, I observe, "That though excesses of both kinds are to be avoided, and though a proper medium ought to be studied in all productions; yet this medium lies not in a point, but admits of a very considerable latitude." Consider the wide distance, in this respect, between Mr. Pope and Lucretius. These seem to lie in the two greatest extremes of refinement and simplicity which a poet can indulge himself in, without being guilty of any blameable excess. All this interval may be filled with poets, who may differ from each other, but may be equally admirable, each in his peculiar style and manner. Corneille and Congreve, who carry their wit and refinement somewhat farther than Mr. Pope (if poets of so different a kind can be compared together), and Sophocles and Terence, who are more simple than Lucretius, seem to have gone out of that medium wherein the most perfect productions are to be found, and are guilty of some excess in these opposite characters. Of all the great poets, Virgil and Racine, in my opinion, lie nearest the centre, and are the farthest removed from both the extremities.
My second observation on this head is, "That it is very difficult, if not impossible, to explain by words wherein the just medium betwixt the excesses of simplicity and refinement consists, or to give any rule by which we can know precisely the bounds betwixt the fault and the beauty." A critic may not only discourse very judiciously on this head without instructing his readers, but even without understanding the matter perfectly himself. There is not in the world a finer piece of criticism than Fontenelle's "Dissertation on Pastorals;" wherein, by a number of reflections and philosophical reasonings, he endeavours to fix the just medium which is suitable to that species of writing. But let any one read the pastorals of that author, and he will be convinced, that this judicious critic, notwithstanding his fine reasonings, had a false taste, and fixed the point of perfection much nearer the extreme of refinement than pastoral poetry will admit of. The sentiments of his shepherds are better suited to the toilets of Paris than to the forests of Arcadia. But this it is impossible to discover from his critical reasonings. He blames all excessive painting and ornament, as much as Virgil could have done had he written a dissertation on this species of poetry. However different the tastes of men may be, their general discourses on these subjects are commonly the same. No criticism can be very instructive which descends not to particulars, and is not full of examples and illustrations. 'Tis allowed on all hands, that beauty, as well as virtue, lies always in a medium; but where this medium is placed is the great question, and can never be sufficiently explained by general reasonings.