"Take seriously the Heterodox Boxes. If they are not assigned, consider them mandatory bedtime reading! They present alternative points of view (that is, "heterodox," non-orthodox, points of view: the Greek words mean "many-opinion" vs. "upright opinion") on everything from the role of mathematics in economic theory to the visions of libertarianism after Ayn Rand. Think of the Heterodox Boxes as an introduction to the wider culture of economics." ~~ From Preface to Students
See also Economic literature in the "Speaking Economics" section.