“He always kept three books at hand – one scientific, one of classical literature or history, one light fiction – which he took up in turn, giving each exactly twenty minutes according to a pocket watch placed on the table beside his chair. In this fashion, he said, he was able to remember what he read.”

“He always kept three books at hand – one scientific, one of classical literature or history, one light fiction – which he took up in turn, giving each exactly twenty minutes according to a pocket watch placed on the table beside his chair. In this fashion, he said, he was able to remember what he read.”

— David McCullough