... biographers have thought fit to drag from the privacy of private letters or conversation and publish as their deliberate judgments. From Nietzsche at least something better might have been expected, but I can find little in his anti-Wagnerian writings except coarse vituperation and low scandal. There is no anti-Wagnerian literature worthy of the name. There are plenty of highly musical and artistic natures who honestly dislike his art, and I am so far able to sympathize with them as to believe that an inestimable ... — Wagner's Tristan und Isolde • George Ainslie Hight
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