"Political ideas that have dominated the public mind for decades cannot be refuted through rational arguments. They must run their course in life and cannot collapse otherwise than in great catastrophe."

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I do not overlook the fact that there are irrationalists who love mankind, and that not all forms of irrationalism engender criminality. But I hold that he who teaches that not reason but love should rule opens up the way for those who rule by hate. (Socrates, I believe, saw something of this when he suggested that mistrust or hatred of argument is related to mistrust or hatred of man).

— Karl Popper