No One in This World Has Ever Lost Money by Underestimating the Intelligence of the Great Masses of the Plain People

H. L. Mencken? Louis B. Mayer? Arthur L. Mayer? David Ogilvy? P. T. Barnum? Apocryphal? Dear Quote Investigator: A sardonic comment about the general public has been credited to the famous journalist curmudgeon H. L. Mencken. Here are two versions: (1) No one ever went broke underestimating the intelligence of the American public. (2) Nobody …