Since 2014, Schlesser has been the director of the Hartun-Bergman Foundation (Antibes, France), whose main mission is to preserve the archives and objects of artists. He has just published his first novel, Lex Yeux de Mona (Mona's Eyes), after a string of essays on the history of art and aesthetics. He is also a lecturer at the Ecole Polytechnique in Paris. First through realism and now through fiction, He attests that an attentive look at any artistic expression is an apprenticeship to life, to its beauty, to know oneself, "to how big the small can be, to believe in miracles, to put the world on pause, that there is no weaker sex, to live the throes of death, to listen to your inner voice, to fight and persevere, that love is desire and desire is deprivation...’".