Introduction: growth in retrospect and prospect. 0. Reflections on growth theory (R. Solow). Part 1: Theories of economic growth. 1. Neoclassical models of endogenous growth: the effects of fiscal policy, innovation and fluctuations (L. Jones, R. Manuelli). 2. Growth with quality-improving innovations: an integrated framework (P. Aghion, P. Howitt). 3. Horizontal innovation in the theory of growth and development (G. Gancia, F. Zilibotti). 4. From stagnation to growth: unified growth theory (O. Galor). 5. Poverty traps (C. Azariadis, J. Stachurski). 6. Institutions as the fundamental cause of long-run growth (D. Acemoglu, S. Johnson, J. Robinson). 7. Growth theory through the lens of development economics (A. Banerjee, E. Duflo). Part 2: Empirics of economic growth. 8. Growth econometrics (S. Durlauf, P Johnson, J. Temple). 9. Accounting for cross-country income differences (F. Caselli). 10. Accounting for growth in the information age (D. Jorgenson). 11. Externalities and growth (A. Rodriguez-Clare, P. Klenow). Part 3: Growth policies and mechanisms. 12. Finance and growth (R. Levine). 13. Human capital and technology diffusion (J. Benhabib, M. Spiegel). 14. Growth strategies (D. Rodrik). 15. National policies and economic growth: A reappraisal (W. Easterly).