True literacy is becoming an arcane art, and the nation is steadily "dumbing down."

We mythologists know very well that myths and legends contain borrowings, moral lessons, nature cycles, and a hundred other distorting influences, and we labor to cut them away and get to what might be a kernel of truth. In fact, these same techniques must be applied to the most sober histories, for no one writes the clear and apparent truth-if such a thing can even be said to exist.

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

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

The final end of Eternity, and the beginning of Infinity

To bring about destruction by overcrowding, mass starvation, anarchy, the destruction of our most cherished values, there is no need to do anything. We need only do nothing except what comes naturally, and breed. And how easy it is to do nothing

The vast majority, who believe in astrology and think that the planets have nothing better to do than form a code that will tell them whether tomorrow is a good day to close a business deal or not, become all the more excited and enthusiastic.