Those who become great must have the four precepts, the six levels of cognitive thinking Those who become great must have the four precepts, the six levels of cognitive thinking Those who become great must have the four precepts, the six levels of cognitive thinking Those who become great must have the four precepts, the six levels of cognitive thinking Those who become great must have the four precepts, the six levels of cognitive thinking Those who become great must have the four precepts, the six levels of cognitive thinking Those who become great must have the four precepts, the six levels of cognitive thinking Those who become great must have the four precepts, the six levels of cognitive thinking Those who become great must have the four precepts, the six levels of cognitive thinking