Composers should write tunes that chauffeurs and errand boys can whistle.
No woman is worth the loss of a night's sleep.
If an opera cannot be played by an organ grinder, it's not going to achieve immortality.
The English may not like music, but they absolutely love the noise it makes.
Madam, you have between your legs an instrument capable of giving pleasure to thousands and all you can do is scratch it.
At a rehearsal I let the orchestra play as they like. At the concert I make them play as I like.