The 'unpopular' parenting rule I always used on my kids–Esther Wojcicki
cnbc.com
cnbc.com
-- almost Larry Wall
It's also not unpopular at all in my experience, especially with kids that grow up on farms and ranches (we're basically rural) where you have to go do hard physical labor regularly just to survive
Everything can be taken from a slave and dead people need nothing.
To rephrase in a less hyperbolic manner : desire is unlimited, and you need force to extract work from the unwilling.