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

The world of A.D. 2014 will have few routine jobs that cannot be done better by some machine than by any human being. Mankind will therefore have become largely a race of machine tenders.

Science doesn't purvey absolute truth. Science is a mechanism... for testing your thoughts against the universe.

In the presence of total Darkness, the mind finds it absolutely necessary to create light.

The Earth faces environmental problems right now that threaten the imminent destruction of civilization and the end of the planet as a livable world. Humanity cannot afford to waste its financial and emotional resources on endless, meaningless quarrels between each group and all others. there must be a sense of globalism in which the world unites to solve the real problems that face all groups alike.

Society is much more easily soothed than one's own conscience.

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.