"A Mad World!" is a novel written by Hendrik Conscience, a Belgian author. The novel is set in Antwerp during the 16th century and follows the life of a young man named Gilbert Goedleven, who becomes involved in the world of the Anabaptists, a radical Protestant sect. The novel explores themes of religious fanaticism, persecution, and hypocrisy. Conscience portrays the madness of the world through the eyes of Gilbert, who struggles to find meaning in a world that he sees as consumed by greed and cruelty. "A Mad World!" was first published in 1851 and is considered one of Conscience's most important works.