Tell him, on the contrary, that he needs, in the interest of his own happiness, to walk in the path of humility and self-control, and he will be indifferent, or even actively resentful.
Cleanliness is very important. If you let kids make a total mess in the kitchen and then leave, you're not really teaching them anything.
I've just been very, very lucky with the film having been introduced in the right way.

