[from Fanny Howe's interview in Daniel Kane's What Is Poetry [Conversations with the American Avant-Garde], T&W, 2003]
I think for me poems are sentences, which may be why they are getting shorter. I love a complete sentence, and all that it contains in the way of balance and aspiration. I love prose sentences. But a whole poem of mine is a sentence composed of sound-lines (bars), each line being the equivalent of a complex word. Each sound-line floats in tandem with the next one. Each one is a word. The group of sound-lines or words forms a sort of sentence which is a poem.
A few words create together one word, and that word is on a line, and the next line consists of another long word made up of words. Then the poem is composed of both many and few words. The lines themselves demonstrate their separateness and, at the same time, the gravitational pull in relation to each other.
Prose only differs to the extent that the lines jump on each other, left to right, instead of falling down from an upwards position. The jumping to the side saves paper (time and space), but it also indicates another thought process -- one with a goal. It's the difference between taking a walk and sitting still. Prose has just as much poetry in it as a poem does. It's just in a rush to get somewhere and bears more guilt, always trying to justify itself.
What Is Poetry: Conversations With the American Avant-Garde