The poetical impression of any object is that uneasy, exquisite sense of beauty or power that cannot be contained within itself; that is impatient of all limit; that (as flame bends to flame) strives to link itself to some other image of kindred beauty or grandeur; to enshrine itself, as it were, in the highest forms of fancy, and to relieve the aching sense of pleasure by expressing it in the boldest manner.