Besides this, every person is an instrument in this orchestra which is the whole universe, and his voice is the music that comes from each instrument. Each instrument is made distinct and particular and peculiar, so that no other voice can take the place of that particular voice. If then - with the instrument that God has made and the music that God has intended to be played in the world - one does not allow that music to be played and one develops a voice which is not one's own, naturally that is a great cruelty to oneself and to others.