"These hard, powerful, brilliantly resourceful sea masters had to sleep occasionally, and therefore found it necessary to surround themselves with super-loyal, muscular but dull-brained illiterates who could not see nor savvy their masters’ stratagems. There was great safety in the mental dullness of these henchmen. The Great Pirates realized that the only people who could possibly contrive to displace them were the truly bright people."
January 1, 1970
https://en.wikiquote.org/wiki/Operating_Manual_for_Spaceship_Earth