'A remarkably able book ... A fine piece of work - in every respect a most valuable contribution to the history of a difficult period.' New Statesman
'Deep learning and taste and skill in its presentation have combined to produce a work which is a credit to Cambridge scholarship and history.' The Times
'A very readable book, extraordinarily full of detail yet never dull. It seems to me to be a model of what such books should be.' Annual Bulletin of Historical Literature
'The author has certainly provided for this hitherto neglected emperor his 'proper mansion in history'.' English Historical Review
Originally published in 1929, with a hardcover reissue in 1963, this study of the usurping Byzantium emperor is released again in response to the current revival of interest in Byzantium studies.