With sweetmeats, pastry and confectionary we cannot bring up children in sound health. The mental food must be as simple and nourishing as the bodily. Great composers have sufficiently provided for the former; keep to their works.
All bravura-music soon grows antiquated. Rapid execution is valuable only when used to perfect the performance of real music.
Never help to circulate bad compositions; on the contrary, help to suppress them with earnestness.
You should neither play bad compositions, nor, unless compelled, listen to them.
Do not think velocity, or passage-playing, your highest aim. Try to produce such an impression with a piece of music as was intended by the composer; all further exertions are caricatures.