"The depressing truth is that inequality has deeper, more complex origins than we have thought. And America's foundational promise of equality of opportunity is far more problematic and elusive than we, particularly we conservatives, have thought. Equality of opportunity remains more aspirational than actual, and the challenge of rectifying this is becoming more daunting because of the increase in 'assortative mating' -- the tendency of the educated and upwardly mobile to marry one another -- which deepens the 'cognitive stratification' of society."
- George Will