"The great achievement is to lose one's reason for no reason. . . ."

"'a knight errant deserves neither glory nor thanks if he goes mad for a reason.  The great achievement is to lose one's reason for no reason, and to let my lady know that if I can do this without cause, what should I not do if there were cause?'"

Sancho Panza, in Miguel de Cervantes, Don Quixote I.xxv (trans. Edith Grossman (New York: HarperCollins Publishers, Inc., 2003), 194).