One bites into the brass ...

One bites into the brass mouthpiece of his wooden cudgel, and the other blows his cheeks out on a French horn. Do you call that Art?
 Franz Schubert

Quotes from the same author

Above all things, I must not get angry. If I do get angry I knock all the teeth out of the mouth of the poor wretch who has angered me.
 Franz Schubert
There are two contrary impulses which govern this man's brain-the one sane, and the other eccentric. They alternate at regular intervals.
 Franz Schubert