*[http://etext.lib.virginia.edu/DicHist/analytic/anaVI.html The history of religious and philosophical ideas], in ''Dictionary of the History of Ideas''
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*[https://etext.lib.virginia.edu/DicHist/analytic/anaVI.html The history of religious and philosophical ideas], in ''Dictionary of the History of Ideas''
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* [http://www.digdownproductions.com Evil in Modern Thought: An Alternative History of Philosophy. A documentary film about the problem of evil.]
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* [https://www.digdownproductions.com Evil in Modern Thought: An Alternative History of Philosophy. A documentary film about the problem of evil.]