I certainly can't see most of what they tell me, and almost any educated person can tick off a liar of contemporary examples where they've proved themselves wrong.
While we were quoting Feynman, here are a few others...
“We are trying to prove ourselves wrong as quickly as possible, because only in that way can we find progress.â€
“Science is the belief in the ignorance of the expertsâ€
“If you thought that science was certain - well, that is just an error on your part.â€
and my favorite
“If I could explain it to the average person, I wouldn't have been worth the Nobel Prize.â€
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The opposite of a fact is falsehood, but the opposite of one profound truth may very well be another profound truth. - Niels Bohr