Uncertainty that comes from knowledge (knowing what you don't know) is different from uncertainty coming from ignorance.

The age of the pulp magazine was the last in which youngsters, to get their primitive material, were forced to be literate.

Science does not promise absolute truth, nor does it consider that such a thing necessarily exists. Science does not even promise that everything in the Universe is amenable to the scientific process.

If I were not an atheist, I would believe in a God who would choose to save people on the basis of the totality of their lives and not the pattern of their words. I think he would prefer an honest and righteous atheist to a TV preacher whose every word is God, God, God and whose every deed is foul, foul, foul.

The peace and joy of the Christmas season was marred by a proclamation of a general strike of all the military forces of the world. Panic reigns in the hearts of all the patriots of every persuasion. Meanwhile, fears of universal disaster sank to an all-time low over the world.

[Social] science fiction is that branch of literature which is concerned with the impact of scientific advance on human beings.

Any system which allows men to choose their own future will end by choosing safety and mediocrity, and in such a Reality the stars are out of reach.