By the time of his death the English economist Lionel Robbins (1898-1984) was celebrated as a 'renaissance man'. He made major contributions to his own academic discipline and applied his skills as an economist not only to practical problems of economic policy - with conspicuous success when he served as head of the economists advising the wartime coalition government of Winston Churchill in 1940-45 - and of higher education - the 'Robbins Report' of 1963 - but also to the administration of the visual and performing arts that he loved deeply. He was devoted to the London School of Economics, from his time as an undergraduate following active service as an artillery officer on the Western Front in 1917-18, through his years as Professor of Economics (1929-62), and his stint as chairman of the governors during the 'troubles' of the late 1960s. This comprehensive biography, based on his personal and professional correspondence and other papers, covers all these many and varied activities.