"'...What little information we have about the old times, the pittance of data which the Butlerians left us… — Frank Herbert
"'...What little information we have about the old times, the pittance of data which the Butlerians left us, Korba has brought it for you. Start with the Genghis Khan.' 'Ghenghis . . . Khan? Was he of the Sardaukar, m'Lord?' 'Oh, long before that. He killed . . . perhaps four million.' 'He must've had formidable weaponry to kill that many, Sire. Lasbeams, perhaps, or . . .' 'He didn't kill them himself, Stil. He killed the way I kill, by sending out his legions. There's another emperor I want you to note in passing--a Hitler. He killed more than six million. Pretty good for those days.' 'Killed . . . by his legions?' Stilgar asked. 'Yes.' 'Not very impressive statistics, m'Lord.' "
Source: Wikiquote · CC BY-SA 4.0
More from this book
There was a man so wise
He jumped into
A sandy place
And burnt out both his eyes!
And when he knew his eyes were gone,
He offered no complaint.
He summoned up a vision
And made himself a saint.
“’Rulers are notoriously cynical where religions are concerned. Religion, too, is a weapon. What manner of weapon is religion when it becomes the government?’”
What is more ridiculous than a Death Commando transformed into a priest?

