“People who think they know everything are annoying to those of us who do.”
Source: Get A Clue
As quoted in The Mammoth Book of Zingers, Quips, and One-Liners (2004) edited by Geoff Tibballs, p. 299
General sources
“People who think they know everything are annoying to those of us who do.”
Source: Get A Clue
“People who think they know everything really annoy those of us who know we don't.”
Bjarne Stroustrup's FAQ: Did you really say that?, 2007-11-15 http://www.stroustrup.com/bs_faq.html#really-say-that,
Source: The Division of Labor in Society (1893), p. 54
Interview with actress Nastassja Kinski, Indiantelevision.com, 23 August, 2003
Scientists
The Note-Books of Samuel Butler (1912), Part XIV - Higgledy-Piggledy
"Entertainment or Education? (1936)
Context: The theater-goer in conventional dramatic theater says: Yes, I've felt that way, too. That's the way I am. That's life. That's the way it will always be. The suffering of this or that person grips me because there is no escape for him. That's great art — Everything is self-evident. I am made to cry with those who cry, and laugh with those who laugh. But the theater-goer in the epic theater says: I would never have thought that. You can't do that. That's very strange, practically unbelievable. That has to stop. The suffering of this or that person grips me because there is an escape for him. That's great art — nothing is self-evident. I am made to laugh about those who cry, and cry about those who laugh.
“Those who know nothing must believe everything.”
Wer nichts weiß, muss alles glauben.
Source: Aphorisms (1880/1893), p. 21, Aphorismen, in: Schriften, vol. 1, Paetel, Berlin 1893.
Source: Everything Belongs: The Gift of Contemplative Prayer