Michèle Lamont takes us into the world inhabited by working-class men--the world as they understand it. Interviewing black and white working-class men who, because they are not college graduates, have limited access to high-paying jobs and other social benefits, she constructs a revealing portrait of how they see themselves and the rest of society.

Morality is at the center of these workers' worlds. They find their identity and self-worth in their ability to discipline themselves and conduct responsible but caring lives. These moral standards function as an alternative to economic definitions of success, offering them a way to maintain dignity in an out-of-reach American dreamland. But these standards also enable them to draw class boundaries toward the poor and, to a lesser extent, the upper half. Workers also draw rigid racial boundaries, with white workers placing emphasis on the "disciplined self" and blacks on the "caring self." Whites thereby often construe blacks as morally inferior because they are lazy, while blacks depict whites as domineering, uncaring, and overly disciplined.

This book also opens up a wider perspective by examining American workers in comparison with French workers, who take the poor as "part of us" and are far less critical of blacks than they are of upper-middle-class people and immigrants. By singling out different "moral offenders" in the two societies, workers reveal contrasting definitions of "cultural membership" that help us understand and challenge the forms of inequality found in both societies.

Divided Mastery explores a curiously neglected aspect of the history of American slavery: the rental of slaves. Though few slaves escaped being rented out at some point in their lives, this is the first book to describe the practice, and its effects on both slaves and the peculiar institution.

Martin reveals how the unique triangularity of slave hiring created slaves with two masters, thus transforming the customary polarity of master-slave relationships. Drawing upon slaveholders' letters, slave narratives, interviews with former slaves, legislative petitions, and court records, Divided Mastery ultimately reveals that slave hiring's significance was paradoxical.

The practice bolstered the system of slavery by facilitating its spread into the western territories, by democratizing access to slave labor, and by promoting both production and speculation with slave capital. But at the same time, slaves used hiring to their advantage, finding in it crucial opportunities to shape their work and family lives, to bring owners and hirers into conflict with each other, and to destabilize the system of bondage. Martin illuminates the importance of the capitalist market as a tool for analyzing slavery and its extended relationships. Through its fresh and complex perspective, Divided Mastery demonstrates that slave hiring is critical to understanding the fundamental nature of American slavery, and its social, political, and economic place in the Old South.