The Fellow Who Thinks He Knows It All Is Especially Annoying To Those of Us Who Do

Isaac Asimov? Harold Coffin? Unitarian Church Bulletin? Robert Reisner? Joey Adams? Milton Berle? Robert K. Mueller? Anonymous? Dear Quote Investigator: Know-it-alls are eager to assert their expertise on all subjects. I love the following comical reaction to grandiose egotism: Those who believe they know everything are a great nuisance to those of us who do. …