Music is sound AND silence. It is the spaces BETWEEN the notes that create rhythm, melody, and meaning, and the greater the composer -- and the perfornance -- the better the quality of the silence. Legendary pianist Artur Schnabel said that it wasn't the notes but the silences between them he played better than other people. A few seconds more or less at crucial moments in the performance of a piece may mean the difference between a mundane and a transcendent experience.
Inwardness and true quietness appear to be but two aspects of the same thing -- of a "truly centered" life. In the innermost religion of life there is a perpetual calm; perturbations and excitements belong to the comparatively superficial part of our own nature. In cleaving to the Center we cannot but be still; to be inwardly still is to be aware of the Center.