Though they seem at opposite poles, fanatics of all kinds are actually crowded together at one end. It is the fanatic and the moderate who are poles apart and never meet. The fanatics of various hues eye each other with suspicion and are ready to fly at each other’s throat. But they are neighbors and almost of one family. They hate each other with the hatred of brothers.

Eric Hoffer (1902-1983) American writer, philosopher, longshoreman
True Believer: Thoughts on the Nature of Mass Movements, Part 3, ch. 13, § 62 (1951)
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