Book excerpt: Many social policies of the 1960s and 1970s, designed to overcome poverty and provide a decent standard of living for all Americans, ran into trouble in the 1980s with politicians, with social scientists, and with the American people. Here Nathan Glazer looks back at what went wrong, arguing that our social policies, although targeted effectively on some problems, ignored others that are equally important. Glazer's knowledge and judgment, distilled in this book, will be a source of advice and wisdom for citizens and policymakers alike.