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<http://www.biography.com/people/aristotle-9188415>.
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<http://www.biography.com/people/socrates-9488126>.
<http://www.biography.com/people/aristotle-9188415>.
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"Socrates Biography." Bio.com. A&E Networks Television. Web. 13 Sept. 2014.
<http://www.biography.com/people/socrates-9488126>.