These 3 quotes are about the morons who know nothing but pretend they know everything. For example the assholes for Jeebus who want to throw out evolution.

"People who know little are usually great talkers, while men who know much say little."
-- Jean-Jacques Rousseau

“There is a cult of ignorance in the United States, and there has always been. The strain of anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that my ignorance is just as good as your knowledge.”
-- Issac Asimov

"The highest form of ignorance is when you reject something you don't know anything about."
-- Wayne Dyer