The difference between verse and prose is self-evident, but it is a sheer waste of time to look for a definition of the difference between poetry and prose. Frost's definition of poetry as the untranslatable element in language looks plausible at first sight but, on closer examination, will not quite do. In the first place, even in the most rarefied poetry, there are some elements which are translatable. The sound of the words, their rhythmical relations, and all meanings and association of meanings which depend upon sound, like rhymes and puns, aTe,
of course, untranslatable, but poetry is not, like music, pure sound. Any elements in a poem which are not based on verbal experience are, to some degree, translatable into another tongue, for example, images, similes and metaphors which are drawn from sensory experience. Moreover, because one characteristic that all men, whatever their culture, have in common is uniqueness—every man is a member of a class of one—the unique perspective on the world which every genuine poet has survives translation. If one takes a poem by Goethe and a poem by Holderlin and makes literal prose cribs of them, every reader will recognize that the two poems were written by two different people. In the second place, if speech can never become music, neither can it ever become algebra. Even in the most "prosy" language, in informative and technical prose, there is a personal element because language is a personal creation.Val^ry bases his definitions of poetry and prose on the difference between the gratuitous and the useful, play and work, and uses as an analogy the difference between dancing and walking. But this will not do either. A commuter may walk to his suburban station every morning, but at the same time he may enjoy the walk for its own sake; the fact that his walk is necessary does not exclude the possibility of its also being a form of play. Vice versa, a dance does not cease to be play if it is also believed to have a useful purpose like promoting a good harvest.
If French poets have been more prone than English to fall into the heresy of thinking that poetry ought to be as much like music as possible, one reason may be that, in traditional French verse, sound effects have always played a much more important role than they have in English verse. The English- speaking peoples have always felt that the difference between poetic speech and the conversational speech of everyday should be kept small, and, whenever English poets have felt that the gap between poetic and ordinary speech was growing too wide, there has been a stylistic revolution to bring them closer again. In English verse, even in Shakespeare's grandest rhetorical passages, the ear is always aware of its relation to everyday speech. A good actor must—alas, today he too seldom does—make the audience hear Shakespeare's lines as verse not prose, but if he tries to make the verse sound like a different language, he will make himself ridiculous.
But French poetry, both in the way it is written and the way it is recited, has emphasized and gloried in the difference between itself and ordinary speech; in French drama, verse and prose
One can read Shakespeare to oneself without even mentally
(Monsieur St. John Perse tells me that, when it comes to everyday speech, it is French which is the more monotonous and English which has the wider range of vocal inflection.)