The first asseveration is at least doubtful. In the cathedral of Cologne architecture produces an impression without the representation of a drama; the accompaniment of music would add nothing whatever to the beauty and depth of Faust and Hamlet; Goethe’s lyric poetry and the _Divina Commedia_ need no landscape-painting as a frame and background; Michael Angelo’s _Moses_ would hardly produce a deeper impression surrounded by dancers and singers; and the _Pastoral Symphony_ does not require the accompaniment of words in order to exercise its full charm. Schopenhauer, although Wagner admired him as the greatest thinker of all time, expresses himself very decidedly on this point. ‘The grand opera,’ he says,[187] ‘is, properly speaking, no product of pure artistic sense, but rather of the somewhat barbaric conception of elevating æsthetic enjoyment through accumulation of means, simultaneity of quite different impressions, and intensification of the effect through the multiplication of the operating masses and forces; while, on the other hand, music, as the mightiest of all arts, is able by itself alone completely to occupy the mind which is susceptible to it; indeed, its loftiest productions, to be appropriately grasped and enjoyed, demand a mind wholly undivided and undiverted, so that it may yield itself up to them, and lose itself in them, in order completely to understand their incredible inwardness of language. Instead of this, in highly complicated operatic music the mind is besieged at the same time by way of the eye, by means of the most variegated pomp, the most fantastic pictures, and the liveliest impressions of light and colour; while over and above this it is occupied with the story of the piece.... Strictly speaking, then, one may call opera an unmusical invention for the benefit of unmusical minds, into which music must only be smuggled by means of a medium foreign to it, that is, as a sort of accompaniment to a long spun-out, insipid love-story, and its poetical thin broth; for the libretto of an opera does not tolerate concise poetry, full of genius and thought.’ This is an absolute condemnation of the Wagnerian idea of the musical drama as the collective art-work of the future. It might seem, it is true, that certain recent experiments in psychophysics had come to the help of Wagner’s theory of the reciprocal enhancement of the simultaneous effects of different arts. Charles Féré[188] has, in fact, shown that the ear hears more keenly when the eye is simultaneously stimulated by an agreeable (dynamogenous) colour; but, in the first place, this phenomenon may also be interpreted thus: that the keenness of hearing is enhanced not by the visual impression as such, not simply as sense excitation, but only through its dynamogenous quality, which arouses the whole nervous system as well to a more lively activity. And then the question in Féré’s experiments is merely one of simple