The way we create and organize knowledge is the theme of From the Tree to the Labyrinth, a major achievement by one of the world’s foremost thinkers on language and interpretation. Umberto Eco begins by arguing that our familiar system of classification by genus and species derives from the Neo-Platonist idea of a “tree of knowledge.” He then moves to the idea of the dictionary, which—like a tree whose trunk anchors a great hierarchy of branching categories—orders knowledge into a matrix of definitions. In Eco’s view, though, the dictionary is too rigid: it turns knowledge into a closed system. A more flexible organizational scheme is the encyclopedia, which—instead of resembling a tree with finite branches—offers a labyrinth of never-ending pathways. Presenting knowledge as a network of interlinked relationships, the encyclopedia sacrifices humankind’s dream of possessing absolute knowledge, but in compensation we gain the freedom to pursue an infinity of new connections and meanings.

Moving effortlessly from analyses of Aristotle and James Joyce to the philosophical difficulties of telling dogs from cats, Eco demonstrates time and again his inimitable ability to bridge ancient, medieval, and modern modes of thought. From the Tree to the Labyrinth is a brilliant illustration of Eco’s longstanding argument that problems of interpretation can be solved only in historical context.

The intertwining of U.S. Catholicism and race-based slavery is a painful aspect of the Church’s history. Many scholars have shied away from this uncomfortable topic, but in recent years a cadre of historians have studied Catholics’ varied roles: as enslaved persons, slaveholders, defenders of slavery, and, in a few cases, advocates of abolition and emancipation. This collection of nine essays is divided into three sections: enslaved persons and slaveholders, debating abolition and emancipation, and historians and historiography. The studies, many of which are informed by recent archival discoveries, offer a model for historians seeking to understand the relationship between slavery and the Church, not only topically but in terms of methods, contexts, and resources. They contribute to a broader appreciation of religion’s role in race-based slavery and, in doing so, will assist scholars, teachers, and students in the contemporary discussion involving slavery, racism, and their legacies. Slavery and the Catholic Church in the United States witnesses to the fragility of humanity, which is capable of freedom or slavery, brotherhood or hatred. Yet each chapter offers a ray of hope, suggesting how we might acknowledge and respond to this difficult history.