Macroeconomics has undergone profound changes since the Keynesian consensus broke down in the mid-60s. Axel Leijonhufvud belonged to that core group of distinguished macroeconomists who wrought the changes that brought back the classical questions to the subject: microfoundations, money, markets, institutions, information, transition dynamics and much else. He fashioned a whole series of conceptual innovations that have become part of the folklore of monetary macroeconomics. In this collection of essays distinguished colleagues and former students pay homage to this gentle intellectual giant....