Art History Department of Philosophy, History, Culture and Art Studies University of Helsinki IDEAL AND DISINTEGRATION DYNAMICS OF THE SELF AND ART AT THE FIN-DE-SIÈCLE Marja Lahelma ACADEMIC DISSERTATION To be presented, with the permission of the Faculty of Arts of the University of Helsinki, for public examination in Auditorium XV, University Main Building, on 7 February 2014, at 12 noon. Helsinki 2014