What is the theme in The Balcony by Jean Genet?

Illusion and reality is a theme in the book. The primary theme in The Balcony is the tension between the illusions that rule inside the brothel and the intrusion of reality that rules on the outside. Common men pay money to live out their fantasies in The Grand Balcony. They primarily choose to be men in power (a judge, a bishop, a general), though some who are rich chose to be poor (a tramp). Details are important to these men: their costumes must be perfectly realistic for their fantasies to be enjoyed.