Mark Twain, on a visit to Germany, heard Tristan at Bayreuth and commented: "I know of some, and have heard of many, who could not sleep after it, but cried the night away.
Mark Twain, nunha visita a Alemaña, escoitou Tristan und Isolde en Bayreuth e comentou: "Sei de algúns, e oín a moitos, que non puideron durmir despois disto, senón que choraron toda a noite.