As in reality no purely æsthetical effect can be met with—for man can never leave his dependence on material forces—the excellence of a work of art can only consist in its greater approximation to its ideal of æsthetic purity, and however high we may raise the freedom of this effect, we shall always leave it with a particular disposition and a particular bias. Any class of productions or separate work in the world of art is noble and excellent in proportion to the universality of the disposition and the unlimited character of the bias thereby presented to our mind. This truth can be applied to works in various branches of art, and also to different works in the same branch. We leave a grand musical performance with our feelings excited, the reading of a noble poem with a quickened imagination, a beautiful statue or building with an awakened understanding; but a man would not choose an opportune moment who attempted to invite us to abstract thinking after a high musical enjoyment, or to attend to a prosaic affair of common life after a high poetical enjoyment, or to kindle our imagination and astonish our feelings directly after inspecting a fine statue or edifice. The reason of this is, that music, _by its matter_, even when most spiritual, presents a greater affinity with the senses than is permitted by æsthetic liberty; it is because even the most happy poetry, having _for its medium_ the arbitrary and contingent play of the imagination, always shares in it more than the intimate necessity of the really beautiful allows; it is because the best sculpture touches on severe science _by what is determinate in its conception_. However, these particular affinities are lost in proportion as the works of these three kinds of art rise to a greater elevation, and it is a natural and necessary consequence of their perfection, that, without confounding their objective limits, the different arts come to resemble each other more and more, in the action _which they exercise on the mind_. At its highest degree of ennobling, music ought to become a form, and act on us with the calm power of an antique statue; in its most elevated perfection, the plastic art ought to become music and move us by the immediate action exercised on the mind by the senses; in its most complete development, poetry ought both to stir us powerfully like music and like plastic art to surround us with a peaceful light. In each art, the perfect style consists exactly in knowing how to remove specific limits, while sacrificing at the same time the particular advantages of the art, and to give it by a wise use of what belongs to it specially a more general character.