'a man's bewilderment is the measure of his wisdom'

"Oh, nothing, of course, nothing!" answered Holgrave with a smile. "Only this is such an odd and incomprehensible world! The more I look at it, the more it puzzles me; and I begin to suspect that a man's bewilderment is the measure of his wisdom. Men and women, and children, too, are such strange creatures, that one never can be certain that he really knows them; nor ever guess what they have been, from what he sees them to be, now."

—Nathaniel Hawthorne, The House of the Seven Gables (1851)