Edited sentence: An up-to-date Post Keynesian attempt, aimed mainly at graduate and advanced undergraduate students, is Hayes (2006).Modern macroeconomics text-books do not present The General Theory with any accuracy.Paul Krugman has written a balanced, accessible and entertaining introduction to the 2007 Palgrave edition of The General Theory.The earliest attempt to write a student guide was Robinson (1937), and the most successful was Hansen (1953).These are both quite accessible but Old Keynesian