'Colin Clark, the subject of this biography, was regarded as one of Australia’s most profound thinkers. The Economic Society of Australia chose him as the joint winner (with Trevor Swan) of its inaugural Distinguished Fellow award in 1987. The University of Queensland, where Clark held an honorary appointment in his final years, had such a high opinion of him that it named both the building housing its Economics Faculty and an annual public lecture in his honour. John Maynard Keynes referred to Clark as ‘a bit of a genius: almost the only economic statistician I have ever met who seems to me quite first class’ (Moggridge (ed.), The Collected Writings of John Maynard Keynes, vol. XXIX, 1979, 57). Several universities, including Monash, Queensland, Milan and Tilburg, awarded him honorary degrees. Among his major contributions to economics was the concept of Gross National Product or GNP. He was also a founder of development economics: the World Bank included Clark among its top 10 pioneers of development economics.'(Introduction)