Quote Origin: 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? Question for 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 …

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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