The American Dream is one of the greatest ideas in the history of human achievement . . . It thrives today in an age when its core components of freedom and opportunity are open to more Americans than ever before. It holds a real, identifiable place in the American heart and mind, and it informs the aspirations of everyone from farmers to software developers, from detectives to bankers, from soldiers to social workers . . . It defines us as a people, even as we add to its meaning with each new chapter in our national experience and our individual actions.