that point where sense and dulness meet.
and immediately adds the reason of his precept, the author of nature having so constituted the mental faculties, that one of them can never greatly excel, but at the expense of another. From this state of co-ordination in the mental faculties, and the influence and effects they have upon one another, the poet draws this consequence, that no one genius can excel in more than one art or science. The consequence shows the necessity of the precept, just as the premises, from which the consequence is drawn, show the reasonableness of it.
Ver. 68. First follow nature, &c.] The critic observing the directions before given, and now finding himself qualified for his office, is shown next how to exercise it. And as he was to attend to nature for a call, so he is first and principally to follow nature when called. And here again in this, as in the foregoing precept, our poet, from ver. 67 to 88, shows both the fitness and necessity of it. I. Its fitness. 1. Because nature is the source of poetic art, this art being only a representation of nature, who is its great exemplar and original. 2. Because nature is the end of art, the design of poetry being to convey the knowledge of nature in the most agreeable manner. 3. Because nature is the test of art, as she is unerring, constant, and still the same. Hence the poet observes, that as nature is the source, she conveys life to art; as she is the end, she conveys force to it, for the force of any thing arises from its being directed to its end; and as she is the test, she conveys beauty to it, for everything acquires beauty by its being reduced to its true standard. Such is the sense of these two important lines,
Life, force, and beauty must to all impart,
At once the source, and end, and test of art.
II. The necessity of the precept is seen from hence. The two constituent qualities of a composition, as such, are art and wit; but neither of these attains perfection, till the first be hid, and the other judiciously restrained. This only happens when nature is exactly followed; for then art never makes a parade; nor can wit commit an extravagance. Art, while it adheres to nature, and has so large a fund in the resources which nature supplies, disposes every thing with so much ease and simplicity, that we see nothing but those natural images it works with, while itself stands unobserved behind; but when art leaves nature, misled either by the bold sallies of fancy, or the quaint oddness of fashion, she is then obliged at every step to come forward, in a painful or pompous ostentation, in order to cover, to soften, or to regulate the shocking disproportion of unnatural images. In the first case, our poet compares art to the soul within, informing a beauteous body; but in the last, we are bid to consider it but as a mere outward garb, fitted only to hide the defects of a misshapen one. As to wit, it might perhaps be imagined that this needed only judgment to govern it; but, as he well observes,
wit and judgment often are at strife,
Though meant each other's aid, like man and wife.
They want therefore some friendly mediator; and this mediator is nature: and in attending to nature, judgment will learn where he should comply with the charms of wit; and wit how she ought to obey the sage directions of judgment.
Ver. 88. Those rules of old, &c.] Having thus, in his first precept, to follow nature, settled criticism on its true foundation; he proceeds to show, what assistance may be had from art. But lest this should be thought to draw the critic from the ground where our poet had before fixed him, he previously observes, from ver. 87 to 92, that these rules of art, which he is now about to recommend to the critic's observance, were not invented by abstract speculation; but discovered in the book of nature; and that therefore, though they may seem to restrain nature by laws, yet as they are laws of her own making, the critic is still properly in the very liberty of nature. These rules the ancient critics borrowed from the poets, who received them immediately from nature.
Just precepts thus from great examples giv'n,
These drew from them what they derived from heav'n,
so that both are to be well studied.