In a virtuoso display of erudition, thoughtfulness and humour, Terry Eagleton teases apart the concept of hope as it has been (often mistakenly) conceptualised over six millennia, from ancient Greece to today. He distinguishes hope from simple optimism, cheeriness, desire, idealism or adherence to the doctrine of Progress, bringing into focus a standpoint that requires reflection and commitment, arises from clear-sighted rationality, can be cultivated by practice and self-discipline, and which acknowledges but refuses to capitulate to the realities of failure and defeat. Authentic hope is indubitably tragic, yet Eagleton also argues for its radical implications as 'a species of permanent revolution, whose enemy is as much political complacency as metaphysical despair'. It is a means of facing the future without devaluing the moment or obviating the past.