It was one thing to have guessed it, another to have had that guess confirmed beyond possibility of refutation.
Arthur C. ClarkeCivilization will reach maturity only when it learns to value diversity of character and of ideas.
Arthur C. ClarkeCreationism, perhaps the most pernicious of the intellectual perversions now afflicting the American public.
Arthur C. ClarkeTo find anything comparable with our forthcoming ventures into space, we must go back far beyond Columbus, far beyond Odysseus-far, indeed, beyond the first ape-man. We must contemplate the moment, now irrevocably lost in the mists of time, when the ancestor off all of us came crawling out of the sea.
Arthur C. Clarke