The Legiones Astartes don't dream, much. We consider it a weakness. Our catalepsean node allows us to maintain functionality with as little as 30 minutes of rest a week.

[ But Garviel dreams. And he doesn't like his dreams at all. ]

Oft the best bonds are forged in harsh times. I should tell you about Saul Tarvitz sometime, and the world of Murder where I met him.