Editors. "Catharsis". The Literary Encyclopedia. First published 01 November 2001
[http://www.litencyc.com/php/stopics.php?rec=true&UID=170, accessed 12 December 2013.]
Aristotle's theory of tragic drama was that it assisted order in the social body by enabling the purging (catharsis) of unhealthy emotions, especially by evoking the emotions of pity and fear.