"Indeed I cannot doubt that there has been really one grand empire, or one Universal, one Pandæan, or one Catholic religion, with one language, which has extended over the whole of the world; uniting or governing at the same time."

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I do think the Roman Catholic religion is a disease of the mind which has a particular epidemiology similar to that of a virus... Religion is a terrific meme. That's right. But that doesn't make it true and I care about what's true. Smallpox virus is a terrific virus. It does its job magnificently well. That doesn't mean that it's a good thing. It doesn't mean that I don't want to see it stamped out.

— Richard Dawkins