We have no need of other worlds. We need mirrors. We don't know what to do with other worlds. A single world, our own, suffices us; but we can't accept it for what it is.

The demand for absolute purity of genres is becoming nowadays an anachronism in literature.

Genius is not so much a light as it is a constant awareness of the surrounding gloom.

Our ability to adapt and therefore to accept everything is one of our greatest dangers. Creatures that are completely flexible, changeable, can have no fixed morality.

It is not good for a man to be too cognizant of his physical and spiritual mechanisms. Complete knowledge reveals limits to human possibilities, and the less a man is by nature limited in his purposes, the less he can tolerate limits.

Science explains the world, but only Art can reconcile us to it.

...it is easy not to believe in monsters, considerably more difficult to escape their dread and loathsome clutches.