I could define poetry this way: it is that which is lost out of both prose and verse in translation.
Robert FrostThe line-storm clouds fly tattered and swift, The road is forlorn all day, Where a myriad snowy quartz stones lift, And the hoof-prints vanish away. The roadside flowers, too wet for the bee, Expend their bloom in vain. Come over the hills and far with me, And be my love in the rain.
Robert Frost