I'm afraid you'll get the feeling that I really picked on him because he's old. It's not true. When he was a young man of about 30, he wrote what he called "The Ten Commandments for Conductors." The first one was: If you sweat by the end of the concert it means that you must have done something wrong.
Temo que crean que le he elegido a él porque es una persona mayor. No es verdad. Cuando era joven, cuando tenía unos 30, escribió lo que él llamó "Los diez mandamientos para los directores".