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. ClarkeThe difference between machines and human beings is that human beings can be reproduced by unskilled labour.
Arthur C. ClarkeAll human plans [are] subject to ruthless revision by Nature, or Fate, or whatever one preferred to call the powers behind the Universe.
Arthur C. ClarkeYou will find men like him in all of the world's religions. They know that we represent reason and science, and, however confident they may be in their beliefs, they fear that we will overthrow their gods. Not necessarily through any deliberate act, but in a subtler fashion. Science can destroy a religion by ignoring it as well as by disproving its tenets. No one ever demonstrated, so far as I am aware, the nonexistance of Zeus or Thor, but they have few followers now.
Arthur C. Clarke