The only schoolbook that ever baffled him was Quackenbos' Principles of Rhetoric. No matter how he struggled, young Archibald Henderson of Salisbury, N.C. could not understand it. Finally one day his teacher blew up, slammed the Principles shut, threw the book at Henderson, and sent him from his classroom forever. "In Quackenbos," recalls Archibald Henderson, "I met my master."
He met few others. In time, Henderson became head of the mathematics department at the University of North Carolina, one of the top historians of the South, and a biographer of George Bernard Shaw. He...