In his Paradoxe sur le comédien, written around 1770 but not published until the nineteenth century, the French philosophe Denis Diderot argued that the great actors of his day suppressed their individuality onstage; rather than personally experiencing the emotions called for by the playwright, they denied their own private subjectivity in order to create a more seamless public illusion. By an act of self-effacement, therefore, they paradoxically rendered themselves capable of impersonating anyone. In his essay, Diderot repeatedly turned to the example of his contemporary, the Comédie-Française actress Mlle Clairon, to illustrate this phenomenon. Off the stage, the philosopher claimed, Clairon was physically unimposing, and displays of her true feelings in the privacy of her home seemed artificial and unconvincing. In the theatre, however, she swelled in size and emotional presence until she dominated an audience and deepened the sentiments invoked by the playwright. According to Diderot, in the moment of public performance she was double: both the “little Clairon” and the “great Agrippina”, the socially inconsequential actress and a mythic heroine of the French stage.