James J. Krupa, writing for Slate:
"It ain’t what you don’t know that gets you into trouble. It’s what you know for sure that just ain’t so." ― Charles F. Kettering
“The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.” ― Daniel J. Boorstin
"The trouble with the world is not that people know too little, it’s that they know so many things that just aren't so." ― Mark Twain (?)
"The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge." ― Daniel J. Boorstin