The phenomenon of UFO doesn't say anything about the presence of intelligence in space. It just shows how rare it is here on the earth.
Arthur C. ClarkeI suspect that religion is a necessary evil in the childhood of our particular species. And that's one of the interesting things about contact with other intelligences: we could see what role, if any, religion plays in their development. I think that religion may be some random by-product of mammalian reproduction. If that's true, would non-mammalian aliens have a religion?
Arthur C. ClarkePerhaps, as some wit remarked, the best proof that there is Intelligent Life in Outer Space is the fact it hasn't come here. Well, it can't hide forever - one day we will overhear it.
Arthur C. Clarke