Of course, the classic illustration of unreason is The Sleep of Reason Produces Monsters by Goya, the image of a sleeping artist surrounded by winged ghoulies and beasties unleashed by unreason.

Unreason on the whole is a subject of innumerable greater interest than reason. As such, I’ll take the counter-enlightenment over the enlightenment any day. Conceded, there were interesting aspects of the enlightenment, ignored by history, such as the enlightenment of Thérèse Philosophe. See Robert Darnton’s The Forbidden Best-Sellers of Pre-Revolutionary France.