We two are good at working things out.

So mommy told us when we had a fight, after listening to both sides of the story, and left us to talk things through with each other.

ignore, don't punish

Since people (children) behaving badly sometimes do it for the attention, it's more effective to ignore the behavior than to punish it, because punishing constitutes attention.

Work first, play later

That one didn't really stick as well...