sentences:  Elie Richard studied at Groningen with Des Maretz, a philosopher whose name is used to designate the person who discovered "Mutus Liber".Elie Bouhéreau knew Valentin Conrard, a secretary of the Académie Francaise, as well as many major authors and philosophers of the time.It is he who attributed authorship of "Mutus Liber" to Isaac Baulot.