The last two decades have seen Marxism's academic renascence. In fields as diverse as law, literary criticism, history, and philosophy, Marxism once again captivates no small number of scholars. In part, this reassessment is driven by the efforts of a group of philosophers and economists to reconstruct Marx from the ground up on a more rigorous basis. The work of these "Analytical Marxists" -- who include G.A. Cohen, Jon Elster, and John Roemer...