To JenEllen (about the quotation about Wagner, attributed to Mark Twain): According to this page on Boondocksnet.com, Twain was quoting someone else when he said that. The linked article is about the misattributed quote "I am the American" and other quotes similarly mistakenly assumed to be Twain's own words, and in the article the author mentions...

" another quote frequently misattributed to Twain: 'Wagner's music is better than it sounds.' Twain attributed that quote to humorist Bill Nye but it is now often attributed to Twain. It seems more likely, though, that Twain was using his friend as a model for the development of a character: a naive, suspicious, brash and boastful American abroad. In that case, this would be the kind of quote that should be attributed to the character to differentiate fictional dialogue from the thoughts of the author: 'As Huck Finn said...' or 'As Hank Morgan said....'

"....it is easy to imagine how someone might have read Twain's quotation of Nye saying 'Wagner's music is better than it sounds' and later repeated it as something Twain said. It is also easy to imagine how statements that begin with 'Someone, maybe Mark Twain, once said' or 'I think it was Mark Twain who said' become shortened to 'As Mark Twain said' and take on lives of their own as frequently repeated Twain quotes that no one can find in his writings."