His short story "Hunters of the Sky Cave" has this text:
"Eh, for sure. I suppose it's inevitable and so forth. Terra has been
too rich for too long: we've grown old and content, no more high
hazards for us. Whereas the Merseian Empire is fresh, vigorous,
disciplined, dedicated, et tedious cetera. Personally, I enjoy
decadence; but somebody has to hold off the Long Night for my own
lifetime, and it looks as if I'm elected."
and later...
"And yet, when the bombs finally roared out of space, when the
barbarians howled among smashed buildings and the smoke of burning
books hid dead men in tattered bright uniforms—when the Long Night
came, as it would, a century or a millennium hence, what
difference?—something of beauty and gallantry would have departed the
universe."