1. A fine-tuned mixture of joy, negotiation and guerrilla warfare.
2. What we should do very carefully, and with much kindness, because our kids will choose our nursing homes.
3. Raising children to become happy, healthy, productive adults, so we can laugh when they have their own children who demolish their homes and ruin their sex lives.
4. The art of not only teaching our children, but also learning things from them — such as how much patience we have.