The article focuses on Jacques Lemarchand (1908-1974), a figure in the literary and theatrical spheres, described as a true man of letters. It explores Lemarchand's multifaceted career as a journalist, editor, novelist, diarist, and juror, emphasizing his influential role in the post-war intellectual scene. The recent publication of Lemarchand's "Journal" in three volumes is highlighted, providing insights into his intellectual and emotional life.