To a census-taker, who asked him in 1872 if he was a Catholic, Hugo replied, "No. A Freethinker." Hugo predicted that Christianity would soon disappear, but men would still believe in God.
Don Juan was described by a contemporary as "a school of Atheism." Tartuffe so stirred up the clergy that some clerics wanted the playwright burned as a heretic! Instead, he was excommunicated.