Trying to predict the future is a discouraging and hazardous occupation. If by some miracle a prophet could describe the future exactly as it was going to take place, his predictions would sound so absurd that people everyone would laugh him to scorn. The only thing we can be sure of about the future is that it will be absolutely fantastic. So, if what I say now seems to you to be very reasonable, then I will have failed completely. Only if what I tell you appears absolutely unbelievable have we any chance of visualizing the future as it really will happen.
Arthur C. ClarkeThe difference between machines and human beings is that human beings can be reproduced by unskilled labour.
Arthur C. ClarkeThe greatest tragedy in mankind's entire history may be the hijacking of morality by religion.
Arthur C. ClarkeUsing material ferried up by rockets, it would be possible to construct a "space station" in ... orbit. The station could be provided with living quarters, laboratories and everything needed for the comfort of its crew, who would be relieved and provisioned by a regular rocket service. (1945)
Arthur C. ClarkeAnything that is theoretically possible will be achieved in practice, no matter what the technical difficulties are, if it is desired greatly enough.
Arthur C. Clarke