Thomas Piketty's book Capital in the 21st Century has already attracted more serious attention than any economics book published in the last seventy-five years. This collection of 17 essays by some of the world's most prominent economists explores Piketty's book at depth and from various vantage points. Here is what economists around the world are already saying about this book. "Marx's Capital is strong on theory but, it detractors allege, weak on...