Ten thousand years ago, the Imperium dreamed of peace as well. Truly we did. But... greed and darkness from beyond the realms of science intruded, and we ended up fighting a war against the Primordial Annihilator that has lasted to this day.
[ He looks down at her hand, and puts his own over it, giving it a gentle squeeze. ]
It isn't a bad dream, as dreams go. One worth striving for.