The exploration of the planets is now closer to us in time than the exploration of Africa by Stanley and Livingstone.
Arthur C. ClarkeSometimes I think we're alone in the universe, and sometimes I think we're not. In either case the idea is quite staggering.
Arthur C. ClarkeCivilization will reach maturity only when it learns to value diversity of character and of ideas.
Arthur C. ClarkeThe entire sweep of human history from the dark ages into the unknown future was considerably less important at the moment than the question of a certain girl and her feelings toward him.
Arthur C. ClarkeThe best measure of a man's honesty isn't his income tax return. It's the zero adjust on his bathroom scale.
Arthur C. ClarkeIn this single galaxy of ours there are eighty-seven thousand million suns. [...] In challenging it, you would be like ants attempting to label and classify all the grains of sand in all the deserts of the world. [...] It is a bitter thought, but you must face it. The planets you may one day possess. But the stars are not for man.
Arthur C. Clarke