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A thing is not proved just because no one has ever questioned it. What has never been gone into impartially has never been properly gone into. Hence scepticism is the first step toward truth. It must be applied generally, because it is the touchstone.

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Denis Diderot

French philosopher who was a leading figure of the Enlightenment in France; principal editor of an encyclopedia that disseminated the scientific and philosophical knowledge of the time (1713-1784)

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"Denis Diderot Quotes." Quotes.net. STANDS4 LLC, 2019. Web. 16 Oct. 2019. <https://www.quotes.net/quote/12579>.

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