Online Medieval Sources Bibliography

An Annotated Bibliography of Printed and Online Primary Sources for the Middle Ages

Source Details

Sheldon-Williams, I.P., trans., Periphyseon (De Divisione Naturae), Liber Primus (Scriptores Latini Hiberniae 7. Dublin Institute for Advanced Studies)

Text name(s): Periphyseon (De Divisione Naturae)

Number of pages of primary source text: 287


Dates: 850 - 877

Archival Reference: 

Original Language(s): 

  • Latin


  • Translated into English.
  • Original language included.

Translation Comments: Facing page.

Geopolitical Region(s): 

  • British Isles
  • Germany
  • Ireland


Record Types: 

  • Philosophic Work
  • Theology - Doctrine

Subject Headings: 

  • Classics / Humanism
  • Philosophy / Theology
  • Religion - Institutional Church


  • Appendix
  • Bibliography
  • Introduction


Written by a ninth-century Irish scholar working in France, Periphyseon is a theological/philosophical text which organizes all of nature based on its relationship to the process of creation and discusses the soul’s relationship to God in terms heavily influenced by Platonic thought. Book 1 concerns topics such as the limitations of human knowledge of God, the difference between creation and the non-Created.

Introduction Summary: 

Introduction (1-34) discusses author’s life and works, the manuscripts and editions of the text, and analyzes the major themes of the book.

Cataloger: JMG; cdb