The heart of a grumpy child is lightened by the physical sight of their chastened sibling–so much so that they can skip outside to enjoy the formerly eschewed light of day.
Perish the thought of “the dumb question” until there is just such a question. (Apocryphal examples abound.)
Patience belongs to the child who can savor his sweet the longest, allowing it to linger long after his siblings have finished their treats and they can then experience envy of the sweet they only *just* finished.
If you give a child an inch they will ask you when they next get an inch.
Guilt is a selfish whore who goads the parent into doing more until they remember, “Oh, yes, this is why I don’t usually do more.”