Why was the invention of the idea of 'global justice' in the 1970s, a sharp break from the theory of the social contract? Leading human rights scholar, Professor Samuel Moyn from Columbia University, traces the origins of the philosophy of global justice and examines where it stands now. Are the very principles the new philosophy global justice proclaims, further from reality than ever? A Sydney Ideas event on 22 July 2014 http://sydney.edu.au/sydney_ideas/lectures/2014/professor_samuel_moyn.shtml