I'm quite fond of the writer who told a beginning author, "If you've got a message, use Western Union."
Arthur C. ClarkeOne orbit, with a radius of 42,000 kilometers, has a period of exactly 24 hours. A body in such an orbit, if its plane coincided with that of the Earth's equator, would revolve with the Earth and would thus be stationary above the same spot on the planet. It would remain fixed in the sky of a whole hemisphere ... [to] provide coverage to half the globe, and for a world service three would be required, though more could be readily utilized. (1945) [Predidicting geosynchronous communication satellites]
Arthur C. ClarkeMy objection to organized religion is the premature conclusion to ultimate truth that it represents.
Arthur C. ClarkeIt may be that the old astrologers had the truth exactly reversed, when they believed that the stars controlled the destinies of men. The time may come when men control the destinies of stars.
Arthur C. Clarke