Sometimes, the Angel [of Music] leans over the cradle... and that is how there are little prodigies who play the fiddle at six better than men of fifty, which, you must admit is very wonderful. Sometimes, the Angel comes much later, because the children are naughty and won't learn their lessons or practice their scales. And sometimes, he does not come at all, because the children have a wicked heart or a bad conscience.

Gaston Leroux