Colonization means potential immortality for the human genus. Man's safety on Earth was never great, and it dwindles hourly. Disarmament, even world government, will not guarantee survival in an age when population presses natural resources to the limit and when the knowledge of how to work mischief on a planetary scale is ever more widely diffused among peoples who may grow ever more desperate.

I think the first duty of all art, including fiction of any kind, is to entertain. That is to say, to hold interest. No matter how worthy the message of something, if it's dull, you're just not communicating.

Two lives met across death and centuries. To ask what it meant is meaningless. There is no destiny. But sometimes there is bravery

Why do people in this age think their own impoverished lives must be the norm of the universe?

There are some ideas so stupid that only intellectuals can believe in them, particularly left-wing intellectuals.

Will none wipe the sneer off the face of the cosmos?

I have yet to see any problem, however complicated, which, when you looked at it in the right way, did not become still more complicated.