I remember reading The Rational Optimist by Matt Ridley, and I think there was a section on trade. Basically he said that society progresses when there is trad

I remember reading The Rational Optimist by Matt Ridley, and I think there was a section on trade. Basically he said that society progresses when there is trade, and trade only really takes off when there is trust. It might be morality that is the underpinning of trust.