When teaching intermediate macroeconomics in Harvard, I deeply felt that existing textbooks were all lacking: 1) proper microeconomic foundations linking important notions such as the Keynesian consumption function, the investment accelerator, the Phillips curve, the possibility of persistent (involuntary) unemployment, to precise sources of imperfections in the product, labor, or financial markets; 2) a suitable treatment of growth theory that can shed light on observed convergence and divergence patterns across countries and also on how growth policies should be designed in various countries at different stages of development. Being the first comprehensive attempt at filling these gaps, the Carlin-Soskice textbook should be used by any instructor who wants to bring her students to the frontier of modern macroeconomics while at the same time remaining fully accessible to a broad undergraduate audience. Philippe Aghion, Robert C. Waggoner Professor of Economics, Harvard University