quoth the madman

Fear.

Jean-Jacques Grandville, from Petites misères de la vie humaine (Little troubles of human life), by Old Nick (Paul-Émile Daurand-Forgues), Paris, 1870.

 

"Question with boldness even the existence of a God; because, if there be one, he must more approve of the homage of reason, than that of blind-folded fear."
~Thomas Jefferson