Something similar may be noticed in the music of Wagner. His famous leitmotiv is an attempt to give personality to his characters by something beyond theatrical expedients and light effect. His method of using a definite motiv is a purely musical method. It creates a spiritual atmosphere by means of a musical phrase which precedes the hero, which he seems to radiate forth from any distance. [Footnote: Frequent attempts have shown that such a spiritual atmosphere can belong not only to heroes but to any human being. Sensitives cannot, for example, remain in a room in which a person has been who is spiritually antagonistic to them, even though they know nothing of his existence.] The most modern musicians like Debussy create a spiritual impression, often taken from nature, but embodied in purely musical form. For this reason Debussy is often classed with the Impressionist painters on the ground that he resembles these painters in using natural phenomena for the purposes of his art. Whatever truth there may be in this comparison merely accentuates the fact that the various arts of today learn from each other and often resemble each other. But it would be rash to say that this definition is an exhaustive statement of Debussy's significance. Despite his similarity with the Impressionists this musician is deeply concerned with spiritual harmony, for in his works one hears the suffering and tortured nerves of the present time. And further Debussy never uses the wholly material note so characteristic of programme music, but trusts mainly in the creation of a more abstract impression. Debussy has been greatly influenced by Russian music, notably by Mussorgsky. So it is not surprising that he stands in close relation to the young Russian composers, the chief of whom is Scriabin. The experience of the hearer is frequently the same during the performance of the works of these two musicians. He is often snatched quite suddenly from a series of modern discords into the charm of more or less conventional beauty. He feels himself often insulted, tossed about like a tennis ball over the net between the two parties of the outer and the inner beauty. To those who are not accustomed to it the inner beauty appears as ugliness because humanity in general inclines to the outer and knows nothing of the inner. Almost alone in severing himself from conventional beauty is the Austrian composer, Arnold Schonberg. He says in his Harmonielehre: "Every combination of notes, every advance is possible, but I am beginning to feel that there are also definite rules and conditions which incline me to the use of this or that dissonance." [Footnote: "Die Musik," p. 104, from the Harmonielehre (Verlag der Universal Edition).] This means that Schonberg realizes that the greatest freedom of all, the freedom of an unfettered art, can never be absolute. Every age achieves a certain measure of this freedom, but beyond the boundaries of its freedom the mightiest genius can never go.