From Cleanth Brooks, The Well-Wrought Urn, ch. 11: “The Heresy of Paraphrase”

 

The structure meant is a structure of meanings, evaluations, and interpretations; and the principle of unity which informs it seems to be one of balancing and harmonizing connotations, attitudes, and meanings.  But even here one needs to make important qualification: the principle is not one which involves the arrangement of the various elements into homogeneous groupings, paring like with like.  It unites the like with the unlike.  It does not unite them, however, by the simple process of allowing one connotation to cancel out another nor does it reduce the contradictory attitudes to harmony by a process of subtraction.  The unity is not a unity of the sort to be achieved by the reduction and simplification appropriate to an algebraic formula  It is a positive unity, not a negative; it represents not a residue but an achieved harmony.

 

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The essential structure of a poem (as distinguished from the rational or logical structure of the 'statement' which we abstract from it) resembles that of architecture or painting: it is a pattern of resolved stresses.  Or, to move closer still to poetry by considering the temporal arts, the structure of a poem resembles that of a ballet or musical composition. It is a pattern of resolutions and balances and harmonizations, developed through a temporal scheme.

            Or to move still closer to poetry, the structure of a poem resembles that of a play.  This last example of course, risks introducing once more the distracting element, since drama, like poetry, makes use words.  Yet on the whole, most of us are less inclined to force the concept of 'statement' on drama than on a lyric poem; for the very nature of drama is that of something 'acted out'—something which arrives at its conclusion through conflict—something which builds conflict into its very being….

 

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The conclusion of the poem is the working out of the various tensions—set up by whatever means—by propositions, metaphors, symbols.  The unity is achieved by a dramatic process, not a logical; it represents an equilibrium of forces, not a formula.

 

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Yet there are better reasons than that of rhetorical vain-glory that have induced poet after poet to choose ambiguity and paradox rather than plain, discursive simplicity.  It is not enough for the poet to analyse his experience as a scientist does, breaking it up into parts, distinguishing part from part, classifying the various parts.  His task is finally to unify experience.  He must return to us the unity of the experience itself as man knows it in his own experience.  The poem, if it be a true poem is a simulacrum of reality—in this sense, at least, it is an 'imitation'—by being an experience rather than any mere statement about experience or any mere abstraction from experience….