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Knowledge has to be improved, challenged, and increased constantly, or it vanishes.

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Peter Drucker

Peter Ferdinand Drucker (November 19, 1909 - November 11, 2005) was a writer, management consultant, and self-described "social ecologist"

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    El conocimiento tiene que ser mejorado, desafiado y aumentado constantemente, o desaparece.

    les connaissances doivent être améliorées, remises en question et augmentées constamment, sinon elles disparaissent.

    pengetahuan harus ditingkatkan, ditantang, dan ditingkatkan terus-menerus, atau lenyap.

    知識を改善し、挑戦し、絶えず増やす必要があります。

    wiedza musi być ulepszana, kwestionowana i stale zwiększana, w przeciwnym razie znika.

    o conhecimento precisa ser aprimorado, desafiado e aumentado constantemente, ou desaparece.

    知识必须不断地改进,挑战和增加,否则就消失了。

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    "Peter Drucker Quotes." Quotes.net. STANDS4 LLC, 2021. Web. 25 Jul 2021. <https://www.quotes.net/quote/50215>.

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