A hallucination is a fact, not an error; what is erroneous is a judgment based upon it.
— Bertrand Russell

Men have an extraordinarily erroneous opinion of their position in nature; and the error is ineradicable.
W. Somerset Maugham erroneous quote

A man's conscience and his judgment is the same thing; and as the judgment, so also the conscience, may be erroneous.
— Thomas Hobbes

Quotation, n: The act of repeating erroneously the words of another.
— Ambrose Bierce

The most erroneous stories are those we think we know best - and therefore never scrutinize or question.
— erroneous quotation by Stephen Jay Gould