Translation of the author's Le capital au XXIe siecle.

Includes bibliographical references (pages 579-655) and index.

Income and output -- Growth : illusions and realities -- The metamorphoses of capital -- From old Europe to the new world -- The long-run capital/income ratio -- Capital's share vs. labor's share in the twenty-first century -- Inequality and concentration : an initial orientation -- The two worlds -- Inequality in the income from labor -- Inequality in the ownership of capital -- Merit and inheritance in the long run -- Global inequality of wealth in the twenty-first century -- A social state for the twenty-first century -- Rethinking the progressive income tax -- A global tax on capital -- The question of the public debt.

Piketty analyzes a unique collection of data from twenty countries, ranging as far back as the eighteenth century, to uncover key economic and social patterns and shows that modern economic growth and the diffusion of knowledge have allowed us to avoid inequalities. He argues, however, that the tendency of returns on capital to exceed the rate of economic growth will generate extreme inequalities that stir discontent and undermine democratic values if political action is not taken.