Game Theory has an interesting take on being Nice that I'd like to share. It's strange getting diplomatic advice from mathematicians, but I find their proof more convincing than many of the hypotheses and theories on behavior.
Change for the better doesn't look pretty and nice. It comes from hard work of the many who are forced to work together when they would rather not. It doesn't come in a nice fancy or idyllic package: it comes from playing dirty and getting leverage.