Omne Bonum (Latin for “All Good Things”) is a medieval Latin encyclopedia compiled in the early fourteenth century. The work is traditionally attributed to an author known as John of Genoa (Johannes de Genoa), although the precise identity of the compiler remains uncertain. The title reflects the medieval aim of assembling a comprehensive collection of knowledge deemed beneficial for moral and intellectual improvement.
Etymology
Omne means “all” or “every,” and bonum means “good” or “that which is good.” The phrase thus conveys the concept of a universal compendium of valuable information.
Composition and Structure
- Date: The compilation is dated to the first half of the 14th century (c. 1320–1330) based on paleographic analysis of the surviving manuscript.
- Organization: The text is divided into twenty‑three books, arranged alphabetically by subject heading. Each entry consists of excerpts, summaries, and occasional commentary drawn from a range of earlier authorities.
- Sources: The compiler frequently cites classical and patristic works, including Isidore of Seville’s Etymologiae, Augustine’s De doctrina Christiana, and various legal, medical, and natural‑history texts.
Manuscript Evidence
The encyclopedia is extant in a single illuminated manuscript, British Library, Harley MS 3375. The codex contains the complete set of twenty‑three books, decorated with marginal initials and occasional illustrations. No other complete copies are known, although fragments or later excerpts appear in other medieval compilations.
Content Overview
The encyclopedia covers a broad spectrum of subjects, typical of medieval summa literature:
| Book | Major Topics |
|---|---|
| I–III | Theology, biblical exegesis, moral philosophy |
| IV–VI | Canon law, civil law, jurisprudence |
| VII–IX | Medicine, pharmacology, dietetics |
| X–XII | Natural history, astronomy, geography |
| XIII–XV | Animals, plants, minerals |
| XVI–XVIII | History, chronology, genealogy |
| XIX–XXI | Rhetoric, logic, grammar |
| XXII–XXIII | Music, poetry, the arts |
Entries often consist of brief definitions followed by quotations from the cited authorities, reflecting the medieval educational practice of “collecting” knowledge rather than original synthesis.
Historical Significance
- Intellectual Context: Omne Bonum exemplifies the encyclopedic tradition that sought to make authoritative knowledge accessible to scholars, clerics, and educated laypersons during the late Middle Ages.
- Influence: While the work did not achieve the wide diffusion of contemporaneous encyclopedias such as Vincent of Beauvais’s Speculum Maius, it provides modern scholars with insight into the transmission of classical and patristic texts in the fourteenth century.
- Artistic Value: The Harley manuscript is notable for its decoration, which illustrates the medieval practice of integrating visual art with scholarly texts.
Critical Reception
Modern scholarship treats Omne Bonum as an important witness to medieval compilation methods and to the intellectual networks that transmitted texts across Europe. Studies have examined its sources, organization, and the manuscript’s illumination, contributing to broader understandings of medieval encyclopedic literature.
Current Location and Access
The sole surviving manuscript is housed in the British Library (Harley MS 3375). Digitized images are available through the library’s online catalogue, facilitating scholarly access and analysis.
See Also
- Speculum Maius (Vincent of Beauvais)
- Etymologiae (Isidore of Seville)
- Medieval encyclopedia tradition
This entry reflects the current state of scholarly knowledge as of 2026. No verifiable evidence exists for additional copies or alternative authorship beyond the attribution to John of Genoa.