Countries in which billionaire heirs' wealth is large relative to G.D.P. grow more slowly, show signs of more political rent-seeking, and spend less on innovation than do other countries at similar levels of development. In contrast, countries in which self-made entrepreneur billionaire wealth...

In the recent financial crisis, macroeconomic stimuli produced mixed results across developed economies. In contrast, China's stimulus boosted real GDP growth from an annualized 6.2% in the first quarter of 2009 trough to 11.9% in the first quarter of 2010. Amidst this phenomenal response, land...