“A good catchword can obscure analysis for fifty years.”
He was actually quoting Oliver Wendell Holmes, Jr., during an America's Town Meeting of the Air broadcast, at The Town Hall in New York City, (6 January 1938) http://books.google.com/books?id=GekBAAAAMAAJ&q=%22A+good+catchword%22+%22can+obscure+analysis+for+fifty+years%22&pg=A21#v=onepage
Misattributed
