Keynes's personality was fixed by the clash between Moorean values - other-worldliness, idealism, pacifism - and Keynes's own nature which craved and attained worldly success, wealth and social influence and approbation. The result was an 'existential' outlook that caused him to become particularly sensitive to the human condition, to human suffering and to real concern. Accordingly, Keynes came to see the world through human, down-to-earth, social nd psychological categories, which were opposed to the 'devine' Platonism of classical economics. This book is thus opposed to the recent probability-based interpretations of Keynes's mature work.