The Yomiuri, Japan’s leading newspaper, quoted a phrase
There is a single stupid question in the world. That is the question which is not put on your mouth
translated from Stephen King’s novel, “Under the Dome” in its August 13 issue.
The quote was made in reference to the remark of Oleg Verniaiev, Ukrainian Silver medal winner of the artistic gymnastics in Rio Janeiro Olympics, who cut in when Kohei Uchimura, the Gold medalist was asked by a reporter if he gained such high score because the judges were all "sympathetic" to him, and said, “It’s a useless question once the score was published. It’s the fair result.” Oleg Verniaiev lost the Gold medal to Uchimura by a narrow margin of 0.099 points.
Ensuing Stephen King’s “There is a single stupid question in the world” phrase, Yomiuri columnist wrote that the reporter’s question looks like “a single stupid question in the world,” but it wasn’t, because it pulled out Verniaiev’s sportsmanly and laudable remarks, which was reported worldwide.
I'm curious to know if somebody knows the exact line of Stephen King that matches the Yomiuri columnist’s quote "There is a single stupid question. That is the question which is not put on your mouth."
I'm simply asking what is the original English version of "There's no stupid question," which I found interesting because it's equivalent to Japanese proverb, "Asking a question is a momentary shame. Not asking a question is an eternal shame," to which quoted line of Stephen King exactly matches. I'm only following the wisdom of this proverb.
I tried to find it by googling, but wasn't able to locate it.