These three theatrical plays, diverse in theme yet thematically cohesive, illuminate one of Sartre's key philosophical concerns: the struggle for freedom and action in a complex and restrictive world. In "Lucifer and the Lord," his favorite among his plays, he explores this theme in depth, dealing with fundamental questions of faith and disillusionment. In "No Exit," possibly his most significant work, he argues that "Hell is other people" and examines the afterlife of three souls trapped in a closed room and the torments they inflict on each other. Meanwhile, "The Respectful Prostitute," set in the American South, deals with racism, submission, and the demands of conscience.