Puzzlement and doubt are, however, already crimes in the totalitarian state. The mind that is open for questions is open for dissent. In the totalitarian regime the doubting, inquisitive, and imaginative mind has to be suppressed. The totalitarian slave is only allowed to memorize, to salivate when the bell rings.

Mental Seduction and Menticide: The Psychology of Thought Control and Brain-washing (ed. 1957)