Look harmless and have a good shtick?

What is the most important value you can pass on to your child?

That a lock is only a suggestion?

Oh, all right. That people are more important than things, and it doesn't do much harm to treat them the way you'd like them to treat you either. All the other things I can think of hang off that: never steal from people who can't afford it; avoid violence, especially when it's personal; stick with your mates.

And when it gets really bad, laugh. If you can still crack a joke, the bastards haven't ground you down.