The Man Who Was Thursday: A Nightmare is a 1908 novel by G. K. Chesterton. In Victorian-era London, Gabriel Syme is recruited at Scotland Yard to a secret anti-anarchist police corps. Lucian Gregory, an anarchistic poet, lives in the suburb of Saffron Park. Syme meets him at a party and they debate the meaning of poetry. Gregory argues that revolt is the basis of poetry. Syme demurs, insisting the essence of poetry is not revolution but law. He antagonizes Gregory by asserting that the most poetical of human creations is the timetable for the London Underground. He suggests Gregory isn't really serious about anarchism, which so irritates Gregory that he takes Syme to an underground anarchist meeting place, under oath not to disclose its existence to anyone, revealing his public endorsement of anarchy is a ruse to make him seem harmless, when in fact he is an influential member of the local chapter of the European anarchist council.
