" Now Leto understood why the Old Duke had insisted that his son learn to read his subjects and know the mood of the populace. “At the heart of it all, lad, we rule at their sufferance,” Paulus had told him, “though thankfully most of the population doesn’t realize it. If you’re a good enough ruler, none of your people will think to question it. "

― Brian Herbert , House Atreides (Prelude to Dune #1)