“Belief can be manipulated. Only knowledge is dangerous.”

“They are not mad. They're trained to believe, not to know. Belief can be manipulated. Only knowledge is dangerous.”

“Dangers lurk in all systems. Systems incorporate the unexamined beliefs of their creators. Adopt a system, accept its beliefs, and you help strengthen the resistance to change”

“Clinging to any form of conservatism can be dangerous. Become too conservative and you are unprepared for surprises. You cannot depend on luck. Logic is blind and often knows only its own past. Logic is good for playing chess but is often too slow for the needs of survival.”

“What do such machines really do? They increase the number of things we can do without thinking. Things we do without thinking-there’s the real danger.”

“The assumption that a whole system can be made to work better through an assault on its conscious elements betrays a dangerous ignorance. This has often been the approach of those who call themselves scientists and technologists.”

“Every judgment teeters on the brink of error,” Leto explained. “To claim absolute knowledge is to become monstrous. Knowledge is an unending adventure at the edge of uncertainty.”