Private Pilot Flight Training and Instruction Flight Training Article Library | Back To 4VFR.COM Knowing Know He who knows not and knows not that he knows not, is a fool -- shun him. He who knows not and knows 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 he knows, is wise -- follow him but carefully for He doesn't know what he doesn't know. Nor do you know what you don't know. Written by Gene Whitt Flight Training Article Library | Back To 4VFR.COM