“In truth, there are only two kinds of people; those who accept dogma and know it, and those who accept dogma and don't know it.”

“One cannot escape dogmas—those who hold most firmly to dogmas today are those whose only dogma is that dogmas should be feared like the plague.”

“There are two kinds of people in this world: Those who believe there are two kinds of people in this world and those who are smart enough to know better.”

“there are three kinds of people in the world: those who don't know and don't know they don't know; those who don't know and do know they don't know; and those who know and know how much they still don't know.”

“There are two kinds of people in the world, those who believe there are two kinds of people in the world and those who don't.”

“There seem to be only two kinds of people: Those who think that metaphors are facts, and those who know that they are not facts. Those who know they are not facts are what we call "atheists," and those who think they are facts are "religious." Which group really gets the message?”