His book `` Folie et dÃ raison : Histoire de la folie Ã l' Ã cents ge classique '' ( Madness and Insanity : History of Madness in the Classical Age ) is about the question at what point madness starts . The English edition was an abridged version of Folie et dÃ raison : Histoire de la folie Ã l' Ã cents ge classique . ( A full translation titled The History of Madness has since been published by Routledge ) The work examines ideas , practices , institutions , art and literature relating to madness in Western history .