"Thus, when we feel either the beauty or sublimity of natural scenery--the gay lustre of a morning in spring, or the mild radiance of a summer-evening--the savage majesty of a wintry storm, or the wild magnificence of the tempestuous ocean--we are conscious of a variety of images in our minds, very different from those which the objects themselves present to the eye. Trains of pleasing or of solemn thought arise spontaneously within our minds; our hearts swell with emotions, of which the objects before us seem to afford no adequate cause; and we are never so much satiated with delight, as when, in recalling our attention, we are unable (little able, perhaps, and less disposed) to trace either the progress or the connexion of those thoughts, which have passed with so much rapidity through our imagination. "The effect of the different arts of taste is similar. The landscapes of Claude Lorraine, the poetry of Milton, the music of the greatest masters, excite feeble emotions in our minds when our attention is confined to the qualities they present to our senses, or when it is to such qualities of their composition that we turn our regard. It is then only we feel the sublimity or beauty of their productions, when our imaginations are kindled by their power, when we lose ourselves amid the number of images that pass before our minds, and when we waken at last from this play of fancy, as from the charm of a romantic dream. "The degree in which the emotions of sublimity or beauty are felt, is in general proportioned to the prevalence of those relations of thought in the mind, upon which this exercise of imagination depends. The principal relation which seems to take place in those trains of thought that are produced by objects of taste, is that of resemblance; the relation, of all others the most loose and general, and which affords the greatest range of thought for our imagination to pursue. Wherever, accordingly, these emotions are felt, it will be found, not only that this is the relation which principally prevails among our ideas, but that the emotion itself is proportioned to the degree in which it prevails.