In "The Captive Mind", Czeslaw Milosz's memoir/essay/study about artists and intellectuals living under Communism in the early 1950s, he attributed the epigram below to an ancient Jew from Galacia. Makes sense doesn't it?
"When someone is honestly 55% right, that's very good and there's no use wrangling. And if someone is 60% right, it's wonderful, it's great luck, and let him thank God. But what's to be said about 75% right? Wise people say this is suspicious. Well, and what about 100% right? Whoever says he's 100% right is a fanatic, a thug, and the worst kind of rascal."