Introduction; Part I. Keynes and Keynesian Macroeconomics: 1. Keynes's General Theory; 2. Keynesian macroeconomics; 3. The neoclassical synthesis program: Klein and Patinkin; 4. Monetarism; 5. Phelps and Friedman: the natural rate of unemployment; 6. Leijonhufvud and Clower; 7. Non-Walrasian equilibrium models; 8. Assessment; Part II. DSGE Macroeconomics: 9. Lucas and the emergence of DSGE macroeconomics; 10. A methodological breach; 11. Assessing Lucas; 12. Early reactions to Lucas; 13. Reacting to Lucas: first generation new Keynesians; 14. Reacting to Lucas: alternative research lines; 15. Real business cycle modeling: Kydland and Prescott's contribution; 16. Real business cycle modeling: critical reactions and further developments; 17. Real business cycle modeling: assessment; 18. Second generation new Keynesian modeling; Part III. A Broader Perspective: 19. The history of macroeconomics against the Marshall-Walras divide; 20. Standing up to DSGE macroeconomics; 21. Looking back, looking ahead.