“People who know what kind of new world they want to create through revolution are trouble enough; those who only know what they want to destroy are a curse.”

“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 two kinds of people in this world. Those who want to know the facts, and those who want to make up a nice story to feel better. I wish I was the kind who made up stories.”

“There are two different types of people in the world, those who want to know, and those who want to believe.”

“There are four kinds of people in this world: •those who make things happen•those who watch things happen•those who wonder what happened•those who don’t know that anything happened!I knew from a very early age that I wanted to be first on that list.”

“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?”