"Religion is the most malevolent of all mind viruses. Most malevolent and persistent of all mind viruses. We should get rid of it as quick as we can."
From an interview in Popular Science, 2004, with Arthur C. Clarke.
Mind you, Clarke was friends with C.S. Lewis, who said of Clarke, "I think you are very wicked people, but wouldn't the world be a dull place if everyone was good?"