"The fight work pray cycle representing Knights, Serfs and Clergy and written *word for word* as Neroon said it is about *eight hundred* years old. I'll see if I can dig up an exact reference. I was certain you cribbed it from the Dominicans."
Nope...though the knights/serfs/clergy thing makes sense in that context of work/serve/pray. It's also warrior/worker/religious caste. It just kinda made sense when I thought it up.
So now I have to figure out if I'm ahead of my time or behind my time....