“Religion always leads to rhetorical despotism," Leto said. "Before the Bene Gesserit, the Jesuits were the best at it."

"Jesuits, Lord?"

"Surely you've met them in your histories?"

"I'm not certain, Lord. When were they?"
"No matter. You learn enough about rhetorical despotism from a study of the Bene Gesserit. Of course, they do not begin by deluding themselves with it."

"It leads to self-fulfilling prophecy and justifications for all manner of obscenities," Leto said.

"This . . . rhetorical despotism, Lord?"

"Yes! It shields evil behind walls of self-righteousness which are proof against all arguments against the evil.”