Poetry, as nearly as I can understand it, is a statement in words about a human experience, whether the experience be real or hypothetical, major or minor; but it is a statement of a particular kind. Words are symbols for concepts, and the philosopher or scientist endeavors as far as may be to use them with reference to nothing save their conceptual content. Most words, however, connote feelings and perceptions, and the poet, like the writer of imaginative prose, endeavors to use them with reference not only to their denotations but to their connotations as well. Such writers endeavor to communicate not only concepts, arranged, presumably, either in rational order or in an order of apprehensible by the rational mind, but the feeling or emotion which the rational content ought properly to arouse.
Yvor Winters