Every single one of his adoring worshippers MUST BUY it. No exceptions. All money goes into a demented duck bank account. It must be carried with them wherever they go and they will be given "a certain period of time" to memorize the contents and thereafter they must be ready at any time to quote any line the demented duck commands. There will be punishment for those who fail. I am not privy to it.
Easy peasy breezy.