Mysteries of Udolpho
“A well informed mind is the best security against the contagion of folly and vice. The vacant mind is ever on the watch for relief and ready to plunge into error, to escape from the languor of idleness. Store it with ideas, teach it the pleasure of thinking; and the temptations of the world without will be counteracted by the gratifications derived from the world within.”
Monsieur St. Aubert in The Mysteries of Udolpho by Anne Ratcliffe, 1794.