Intellectual isolation always follows commercial isolation.
When I miss a week in practice, my audience knows it. When I miss a day, I know it.
Just as surely as every new language mastered opens up a new world, so knowledge of a Beethoven, a Chopin, or a Schumann opens up a new world in spiritual beauty and thought.
The very essence of success is practice.
Art must be a slow and normal evolution.
Times change, people change, thought and feeling take new shapes, put on fresh garments, sons bow their heads unwillingly to that which enraptured their fathers.