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Leonardo da Vinci: Any one who in discussion relies upon authority uses, not his understanding…

Any one who in discussion relies upon authority uses, not his understanding, but rather his memory.

In today’s wordsAnyone who relies on authority in an argument is using his memory, not his understanding.

Leonardo da VinciSourced
Source
From the book The Notebooks of Leonardo da Vinci, Science, its principles and rules, no. 1159; translated by Jean Paul Richter, 1888

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