People Who Think They Know it all

Isaac Asimov, renowned science fiction author, gained credit for this statement, "Those people who think they know everything are a great annoyance to those of us who do" (Quote Investigator, 2019, "Readers Digest"). However, there has been no solid evidence stating Asimov said or wrote this quote. After some digging, the Quote Investigator found the earliest quote inside The Saturday Evening Post in 1961 with a variation by Harold Coffin, a humor columnist at Associated Press at that time. People including comedians, Joey Adams and Milton Berle, used Coffin's quote or created many variants as the idiom evolved throughout history.