Donald Moggridge 
Maynard Keynes [PDF ebook] 
An Economist’s Biography

Based on an intimate knowledge of the subject and his environment, this biography of the most influential economist of the twentieth century traces Keynes’ career on all its many levels. From academic Cambridge, to artistic Bloomsbury, to official Whitehall and to the City, we see the intellectual roots of Keynes’ achievements and failures. We also see how he left his mark on the modern world.