What Were Diderot's Main Ideas?

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Although a follower of Voltaire's deist beliefs early in his life, Denis Diderot became an ardent atheist and a believer in materialism, the view that the fundamental substance that makes up the whole of nature is matter and that material interactions produce all phenomena, even human thought and consciousness. He was a deep skeptic and a humanist, who warned against the assumption that knowledge and technology were automatically progressive.

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