Patrick Dandrey is professor at the University of Paris-Sorbonne. President of the Société Jean de La Fontaine, specialist of this poet’s work, of Molière’s plays and of 17th-century French literature, he has also studied the history of melancholy and diseases of the spirit and soul since antiquity (nostalgia, lycanthropy, possession, fanaticism, lovesickness) beginning with his doctoral thesis on medicine in Molière’s comedies. On these subjects, he has written more than one hundred fifty articles, twenty books and as many critical editions, published by Les Belles Lettres, H. Champion, Flammarion, Gallimard, Hachette and Klincksieck, where he directs several editorial series. He directs the Fabula Numerica program under the auspices of OBVIL (Observatoire de la Vie Littéraire; The Observatory of Literary Life), a digital humanities project of LabEx Sorbonne Universities (University of Paris-Sorbonne and Pierre-et-Marie-Curie).