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.
“To say that I am not a "fan" of organized religion is putting it mildly. To be an atheist is almost as arrogant as to be a fundamentalist. But, then again, I can get pretty arrogant.”