If an elderly but distinguished scientist says that something is possible, he is almost certainly right but if he says that it is impossible, he is very probably wrong.

Arthur C. Clarke

Sri Lankabhimanya Sir Arthur Charles Clarke, CBE (16 December 1917 - 19 March 2008) was a British science fiction author, inventor, and futurist, most famous for the novel 2001: A Space Odyssey, written in collaboration with director Stanley Kubrick, a collaboration which also produced the film of the same name; and as a host and commentator in the British television series Mysterious World

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