sentences:  In 1998, after his term as a Minister he became an adviser to the President of the World bank, Jim Wolfenson and later a vice presidents of the World bank, serving in the Research Department (together with Chief Economists Joe Stiglitz and Nick Stern as) and as vice president for Human Development.He left the World Bank to become president of Maastricht University in February 2003 until February 2011.During that period, Maastricht University grew to become one of the leading international teaching and research universities, with almost half of its students coming from abroad and problem-based learning as the primary educational method.