If man had more of a sense of humor, things might have turned out differently.

To torture a man you have to know his pleasures.

I had no hope. Yet expectation lived on in me, the last thing she had left behind. What further consummations, mockeries, torments did I still anticipate? I had no idea as I abided in the unshaken belief that the time of cruel wonders was not yet over.

My pessimism (which, by the way, is far from absolute) originated with my despair in the lack of perfection to be found in human nature. I was attempting in my successive books to show the inevitable handicap of the human condition.

I have to admit that he was not bad at combinatorial analysis - a branch, however, that even then I considered to be dried up.

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.

Practically all SF is trash.