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<p>Book digitized by Google from the library of the New York Public Library and uploaded to the Internet Archive by user tpb.
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<br>Subjects: philosophy; external; existence; knowledge; consciousness; mental; conscious; nature; mind; sensation; german philosophy; human mind; personal identity; external existence; scottish philosophy; human beings; general ideas; intellectual powers; british philosophy; physical science</div>
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William Robinson Pirie</div>
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