The attendees at d'Holbach's dinners included Jean-Jacques Rousseau. Rousseau stopped attending the salon for some time after an incident in February 1754. Diderot had arranged for an acquaintance of his, the Abbé Petit, to read a tragedy composed by the Abbé at d'Holbach's. When the Abbé presented his work, he preceded it by reading his treatise on theatrical composition which the attendees at d'Holbach's found so absurd that they could not help being amused. The attendees—Diderot, Marmontel, Grimm, Saint-Lambert, and others—then proceeded to direct lavish praise at the Abbé which made him happy. D'Holbach later narrated what happened: