This is from his Life of Waller. It has many things that ought to be said and ought to be considered, though perhaps they ought not to be agreed with. Romanticism has enlarged our view of many things, and I, for one, am grateful for it.
It has been the frequent lamentation of good men, that verse has been too little applied to the purposes of worship, and many attempts have been made to animate devotion by pious poetry. That they have very seldom attained their end, is sufficiently known, and it may not be improper to inquire, why they have miscarried. Let no pious ear be offended if I advance, in opposition to many authorities, that poetical devotion cannot often please. The doctrines of religion may, indeed, be defended in a didactick poem; and he who has the happy power of arguing in verse, will not lose it because his subject is sacred. A poet may describe the beauty and the grandeur of nature, the flowers of the spring, and the harvests of autumn, the vicissitudes of the tide, and the revolutions of the sky, and praise the maker for his works, in lines which no reader shall lay aside. The subject of the disputation is not piety, but the motives to piety; that of the description is not God, but the works of God.
Contemplative piety, or the intercourse between God and the human soul, cannot be poetical. Man, admitted to implore the mercy of his creator, and plead the merits of his redeemer, is already in a higher state than poetry can confer.
The essence of poetry is invention; such invention as, by producing something unexpected, surprises and delights. The topicks of devotion are few, and, being few, are universally known; but, few as they are, they can be made no more; they can receive no grace from novelty of sentiment, and very little from novelty of expression.
Poetry pleases by exhibiting an idea more grateful to the mind than things themselves afford. This effect proceeds from the display of those parts of nature which attract, and the concealment of those which repel the imagination: but religion must be shown as it is; suppression and addition equally corrupt it; and such as it is, it is known already.
From poetry the reader justly expects, and from good poetry always obtains, the enlargement of his comprehension and elevation of his fancy; but this is rarely to be hoped by Christians from metrical devotion. Whatever is great, desirable, or tremendous, is comprised in the name of the supreme being. Omnipotence cannot be exalted; infinity cannot be amplified; perfection cannot be improved. The employments of pious meditation are faith, thanksgiving, repentance, and supplication. Faith, invariably uniform, cannot be invested by fancy with decorations. Thanksgiving, the most joyful of all holy effusions, yet addressed to a being without passions, is confined to a few modes, and is to be felt rather than expressed. Repentance, trembling in the presence of the judge, is not at leisure for cadences and epithets. Supplication of man to man may diffuse itself through many topicks of persuasion; but supplication to God can only cry for mercy.
Of sentiments purely religious, it will be found that the most simple expression is the most sublime. Poetry loses its lustre and its power, because it is applied to the decoration of something more excellent than itself. All that pious verse can do is to help the memory, and delight the ear, and, for these purposes, it may be very useful; but it supplies nothing to the mind. The ideas of Christian theology are too simple for eloquence, too sacred for fiction, and too majestick for ornament; to recommend them by tropes and figures, is to magnify, by a concave mirror, the sidereal hemisphere.