You may be sitting in a room reading this book. Imagine one note struck upon the piano. Immediately that one note is enough to change the atmosphere of the room - proving that the sound element in music is a powerful and mysterious agent, which it would be foolish to deride or belittle.
Mozart in his music was probably the most reasonable of the world's great composers. It is the happy balance between flight and control, between sensibility and self-discipline, simplicity and sophistication of style that is his particular province... Mozart tapped once again the source from which all music flows, expressing himself with a spontaneity and refinement and breath-taking rightness that has never since been duplicated.
You compose because you want to somehow summarize in some permanent form your most basic feelings about being alive, to set down some sort of permanent statement about the way it feels to live now, today.
For me, the most important thing is the element of chance that is built into a live performance. The very great drawback of recorded sound is the fact that it is always the same. No matter how wonderful a recording is, I know that I couldn't live with it--even of my own music--with the same nuances forever.