When a piece gets difficult, make faces.
It is not music's function to express rational necessities.
I know two kinds of audiences only--one coughing, and one not coughing.
Children are given Mozart because of the small quantity of the notes; grown-ups avoid Mozart because of the great quality of the notes.
The notes I handle no better than many pianists. But the pauses between the notes - ah, that is where the art resides.
The sonatas of Mozart are unique; they are too easy for children, and too difficult for artists.