One Half of What I Have Told You May Be Proved Untrue. Unfortunately, I Cannot Tell You Which Half

Charles Sidney Burwell? Charles F. Kettering? Helen Clapesattle? Carl Sandburg? Camille Pierre Dadant? Josh Billings? William Osler? Anonymous? Dear Quote Investigator: Educators and researchers know that knowledge in fields like science and medicine is continuously growing and changing. Thus, today’s verities become tomorrow’s fallacies. A lecturer once candidly admitted these weaknesses by saying something like …

He Who Acts as His Own Doctor Has a Fool for a Patient

Roger L’Estrange? William Grant? John Bristed? William J. Flagg? William Osler? Anonymous? Dear Quote Investigator: A person with a serious malady should be very cautious about treating himself or herself. This holds true even if the person is a physician. Here are some versions of a pertinent adage: He who treats himself has a fool …

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