Paul Collier is the co-director of the Centre for the Study of African Economies, Oxford University and professor of economics and public policy at the Blavatnik School of Government. He took a five year Public Service leave, 1998-2003, during which he was director of the Research Development Department of the World Bank.
The author of "Exodus" explains why debates about immigration should really be about estimating the value, and limits, of diversity in society.
