If I had undertaken a systematic defence of the theory here maintained, it would have been my duty to develop the various causes upon which the pleasure received from metrical language depends. Among the chief of these causes is to be reckoned a principle which must be well known to those who have made any of the Arts the object of accurate reflection; namely, the pleasure which the mind derives from the perception of similitude in dissimilitude. This principle is the great spring of the activity of our minds, and their chief feeder.... It would not be a useless employment to apply this principle to the consideration of metre, and to show that metre is hence enabled to afford much pleasure, and to point out in what manner that pleasure is produced. But my limits will not permit me to enter upon this subject, and I must content myself with a general summary.

I have said that poetry is the spontaneous overflow of powerful feelings; it takes its origin from emotion recollected in tranquillity; the emotion is contemplated till, by a species of reaction, the tranquillity gradually disappears, and an emotion, kindred to that which was before the subject of contemplation, is gradually produced, and does itself actually exist in the mind. In this mood successful composition generally begins, and in a mood similar to this it is carried on; but the emotion, of whatever kind, and in whatever degree, from various causes, is qualified by various pleasures, so that in describing any passions whatsoever, which are voluntarily described, the mind will, upon the whole, be in a state of enjoyment. If Nature be thus cautious to preserve in a state of enjoyment a being so employed, the Poet ought to profit by the lesson held forth to him, and ought especially to take care that, whatever passions he communicates to his reader, those passions, if his reader's mind be sound and vigorous, should always be accompanied with an overbalance of pleasure. Now the music of harmonious metrical language, the sense of difficulty overcome, and the blind association of pleasure which has been previously received from works of rime or metre of the same or similar construction, an indistinct perception perpetually renewed of language closely resembling that of real life, and yet, in the circumstance of metre, differing from it so widely—all these imperceptibly make up a complex feeling of delight, which is of the most important use in tempering the painful feeling always found intermingled with powerful descriptions of the deeper passions. This effect is always produced in pathetic and impassioned poetry; while, in lighter compositions, the ease and gracefulness with which the Poet manages his numbers are themselves confessedly a principal source of the gratification of the reader. All that it is necessary to say, however, upon this subject, may be effected by affirming, what few persons will deny, that of two descriptions, either of passions, manners, or characters, each of them equally well executed, the one in prose and the other in verse, the verse will be read a hundred times where the prose is read once.

(Wordsworth: Preface to the Lyrical Ballads, 2d ed.)

The true question must be,[57] whether there are not modes of expression, a construction, and an order of sentences, which are in their fit and natural place in a serious prose composition, but would be disproportionate and heterogeneous in metrical poetry; and, vice versa, whether in the language of a serious poem there may not be an arrangement both of words and sentences, and a use and selection of (what are called) figures of speech, both as to their kind, their frequency, and their occasions, which on a subject of equal weight would be vicious and alien in correct and manly prose. I contend that in both cases this unfitness of each for the place of the other frequently will and ought to exist. And, first, from the origin of metre. This I would trace to the balance in the mind effected by the spontaneous effort which strives to hold in check the workings of passion. It might be easily explained likewise in what manner this salutary antagonism is assisted by the very state which it counteracts; and how this balance of antagonists became organized into metre (in the usual acceptation of that term) by a supervening act of the will and judgment, consciously and for the foreseen purpose of pleasure. Assuming these principles as the data of our argument, we deduce from them two legitimate conditions, which the critic is entitled to expect in every metrical work. First, that as the elements of metre owe their existence to a state of increased excitement, so the metre itself should be accompanied by the natural language of excitement. Secondly, that as these elements are formed into metre artificially, by a voluntary act, with the design and for the purpose of blending delight with emotion, so the traces of present volition should throughout the metrical language be proportionally discernible....

Secondly, I argue from the effects of metre. As far as metre acts in and for itself, it tends to increase the vivacity and susceptibility both of the general feelings and of the attention. This effect it produces by the continued excitement of surprise, and by the quick reciprocations of curiosity still gratified and still re-excited, which are too slight indeed to be at any moment objects of distinct consciousness, yet become considerable in their aggregate influence. As a medicated atmosphere, or as wine during animated conversation, they act powerfully, though themselves unnoticed. Where, therefore, correspondent food and appropriate matter are not provided for the attention and feelings thus roused, there must needs be disappointment felt;—like that of leaping in the dark from the last step of a staircase, when we had prepared our muscles for a leap of three or four.

The discussion on the powers of metre, in the Preface, is highly ingenious, and touches at all points on truth. But I cannot find any statement of its powers considered abstractly and separately. On the contrary, Mr. Wordsworth seems always to estimate metre by the powers which it exerts during (and, as I think, in consequence of) its combination with other elements of poetry. Thus the previous difficulty is left unanswered, what the elements are with which it must be combined in order to produce its own effects to any pleasurable purpose.... For any poetic purposes, metre resembles (if the aptness of the simile may excuse its meanness) yeast, worthless or disagreeable by itself, but giving vivacity and spirit to the liquor with which it is proportionally combined....

Metre in itself is simply a stimulant of the attention, and therefore excites the question, Why is the attention to be thus stimulated? Now the question cannot be answered by the pleasure of the metre itself; for this we have shown to be conditional, and dependent on the appropriateness of the thoughts and expressions to which the metrical form is superadded. Neither can I conceive any other answer that can be rationally given, short of this: I write in metre, because I am about to use a language different from that of prose....

Thirdly, I deduce the position from all the causes elsewhere assigned which render metre the proper form of poetry, and poetry imperfect and defective without metre. Metre, therefore, having been connected with poetry most often, and by a peculiar fitness, whatever else is combined with metre must, though it be not itself essentially poetic, have nevertheless some property in common with poetry, as an intermedium of affinity.

(Coleridge: Biographia Literaria, chap. xviii.)

In the youth of the world, men dance and sing and imitate natural objects, observing in these actions, as in all others, a certain rhythm or order. And, although all men observe a similar, they observe not the same order, in the motions of the dance, in the melody of the song, in the combinations of language, in the series of their imitations of natural objects. For there is a certain order or rhythm belonging to each of these classes of mimetic representation, from which the hearer and the spectator receive an intenser and purer pleasure than from any other: the sense of an approximation to this order has been called taste by modern writers....