...

"For the great enemy of truth is very often not the lie -- deliberate, contrived and dishonest -- but the myth -- persistent, persuasive and unrealistic.
Too often we hold fast to the clichés of our forebears. We subject all facts to a prefabricated set of interpretations.
We enjoy the comfort of opinion without the discomfort of thought."

JFK, discurso de graduación en la Universidad de Yale, 11 de Junio de 1962.