Among the severed heads at the base of the broken phallus in Klingsor's castle (symbolizing the self-castration that gave the wizard his powers - this is one weird opera) are those of Karl Marx, Wagner himself...and Friedrich Nietzsche, the German philosopher who was one of Wagner's most devoted champions until he broke with him over this very opera (he despised Christianity as a "slave" religion and thought Wagner had caved in to bourgeois morality).
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