How did Miss Sara Sampson break with the rules of classical French drama?

Miss Sara Sampson (1755) marked a decisive break with the classical French drama that dominated the German stage by establishing the bürgerliches Trauerspiel, or domestic tragedy, in German literature.1

The play challenged the traditional class distinctions of the era, which dictated that tragic themes were reserved for aristocratic figures, while middle-class characters were relegated to comedy. By centering the narrative on a bourgeois family, Lessing allowed middle-class characters to bear the full burden of a tragic fate for the first time in German drama.1

Unlike the courtly, mannered style of French tragedy—which Lessing considered alien to the German mentality—Miss Sara Sampson utilized reflective prose to explore the psychology of its characters. The play focused on the internal conflict between the demands of virtue and the heart, as well as the struggle between conscience and passion. By shifting the focus from the heroic actions of nobility to the emotional and moral dilemmas of ordinary people, Lessing paved the way for a more realistic, national drama.1