Lucas (2004) asserts that 'Of the tendencies that are harmful to sound economics, the most seductive, and in my opinion, the most poisonous, is to focus on questions of distribution...The potential for improving the lives of poor people by finding different ways of distributing current...

This note extends Lucas' (1987) analysis to assess welfare gains of economic growth and welfare costs of consumption inequality, both within and across countries. We find that the welfare costs of inequality are significantly larger than the gains of economic growth. While the gains of economic...

I show that in a conventional Ramsey model, between one-fourth and one- half of income differences across countries can be explained by a single factor: The steady-state effect of large, persistent differences in national average IQ on worker productivity. These differences in cognitive...