Quote  Category: Knowledge “He who knows not, and knows not that he knows not, is a fool. Shun him. He who knows not, and knows that he knows not is simple. Teach him. He who knows, and knows not that he knows, is asleep. Wake him. He who knows, and knows that he knows is wise. Follow him.” - Lady Isabella Burton (1831-1896) Arabian. Life of Sir Richard Burton - nee Arundell English, m. Sir Richard F. Burton 1861, wrote of his travels & biography. Email this quote to a friend! If there is an error in this quote please let us know. Famous Quotes © ® All rights reserved.