You have kids growing up in some of the worst circumstances financially, living in some of the worst ghettos, and they succeed. They succeed because an adult figure, typically a mother, maybe a grandmother, nourishes the kid, supports the kid, protects the kid, encourages the kid to succeed. It's as if the environment never happened.

Some kids win the lottery at birth; far too many don't - and most people have a hard time catching up over the rest of their lives. Children raised in disadvantaged environments are not only much less likely to succeed in school or in society, but they are also much less likely to be healthy adults.

I remember sitting there on my father's couch or my mother's couch, listening to this lecture about how there were two groups and we had to be separated. We've come a long way from this kind of open racism. And I think it's wonderful.

The scientific study of labor economics provided the opportunity for me to unite theory with evidence my lifetime intellectual passion.