The Cambridge Wagner Encyclopedia - Google Books

https://books.google.de/books?id=-6-kAgAAQBAJ&pg=PT437&dq=Ernst+Benedikt+Kietz&hl=de&sa=X&ei=MTfbVJjkB46wPKK0gbgM&ved=0CDYQ6AEwB

Richard Wagner is one of the most controversial figures in Western cultural history. He revolutionized not only opera but the very concept of art, and his works and ideas have had an immeasurable impact on both the cultural and political landscapes of the…