“To the fanatical believer physical and spiritual suffering is beside the point, compared with salvation. That is why, to him, everything happening around him is irrelevant, a mirror-image, a mere will-o'-the-wisp. … I can really never get shot of them, the fanatics. Whether they appear as religious fanatics or vegetarian fanatics makes no odds. They're catastrophic people.”

“If to be feelingly alive to the sufferings of my fellow-creatures is to be a fanatic, I am one of the most incurable fanatics ever permitted to be at large.”

“[W]hat makes patriotic and religious fanatics such dangerous opponents is not the deaths of the fanatics themselves, but their willingness to accept the deaths of a fraction of their number in order to annihilate or crush their infidel enemy.”

“I know that the Communists are atheistic and godless, but I don't think that that's what's primarily the matter with them. What's primarily the matter with them is that they worship a false god. That's much more dangerous than when people don't believe anything; they may be confused, they may not have a sense of the meaning of life, but they're not dangerous. The fanatic is dangerous. The Communists do have a god, the Dialectic of History, which guarantees everything that they're going to do and guarantees them victory; that's why they're fanatic.”

“To claim you are more detached, more alien to everything than anyone, and to be merely a fanatic of indifference!”

“A fanatic is a nut who has something to believe in.”

“I think you have to grow up and realise that we're facing religious fanatics who would kill everyone in the world who doesn't do what they say. The more time you give them the more bombs they'll get. Bin Laden is going to try and kill more people. It helps the fanatics.”

“You are never dedicated to something you have complete confidence in. No one is fanatically shouting that the sun is going to rise tomorrow. They know it's going to rise tomorrow. When people are fanatically dedicated to political or religious faiths or any other kinds of dogmas or goals, it's always because these dogmas or goals are in doubt.”

“People will tie in with a fanatic if for no other reason than to break the monotony of their lives.”

“The wise man must become a friend of the truth, not a fanatic of the concepts that are believed by many to be true only.”