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Spencer, Herbert <1820-1903>
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Spencer, Herbert <1820-1903>
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Bianchi, Leonardo
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Spencer, Herbert <1820-1903>
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Nietzsche, Friedrich
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Höffding, Harald
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Turchi, Nicola <1882-1958>
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Spencer, Herbert <1820-1903>
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Schopenhauer, Arthur
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De Sanctis, Gaetano <1870-1957>
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