If you are a sensitive and melancholy poet, you want all compositions to be in a minor key. Another one likes gaiety and does not understand a sonata. Any idea can be formulated, but not so the sensation of the heart. And to say that thought is called spirit, whereas the instincts, the nerves, and the heart are part of matter. The vaguest, the most undefinable, the most varied is precisely matter.
Thought is a slave of sensations.
Literature is human thought described by words. Whatever talent you may have in telling me how Othello appears, his heart devoured by jealousy, to kill Desdemona, my soul will never be as much impressed as when I have seen Othello with my own eyes entering the room, his forehead presaging the storm. That is why you need the stage to complement your work. You may describe a tempest with talent-you will never succeed in conveying to me the sensation of it. Instrumental music as well as numbers are based on a unit.