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. I feel strongly out of place here. Sometimes I feel like the one sane person in the community of the mad; sometimes I feel like the one blind man where all others see; the one groping savage in the college of the learned, and always, during service, I feel like a heretic in heaven."