Lao Tzu saw this twenty-six centuries ago: ‘The more prohibitions you have, the less virtuous people will be.’ Montesquieu’s phrase for the calming effect of trade on human violence, intolerance and enmity was ‘doux commerce’ – sweet commerce. And he has been amply vindicated in the centuries since. The richer and more market-oriented societies have become, the nicer people have behaved.
