"They know the truth, but they have all conspired to keep it secret." … "They say that because they're a pampered elite out of touch with the real world." "They say that because they're politically biased." "They have financial incentives." "They don't know any better, they're in the grip of a powerful fallacy." "Well, that's followers of the X movement for you, they just hate everything good and decent." "I don't listen to what that person has to say, he's a known liar and fanatic." … Standing on the outside, what you should ask yourself is, "If they're wrong, would they ever find out?"
January 1, 1970
https://en.wikiquote.org/wiki/Conspiracy_theories