Biographical paragraph.

Outline of this medieval scholar's life and philosophy, by Siegbert W. Becker. Available in PDF or RTF format.

Biography of this medieval Neoplatonist, by Peter Morrell.

Article from the Catholic Encyclopedia by William Turner. Recounts this scholar's life and influence, and evaluates his teachings and length.

By Andrew Irvine, from his reading of this medieval thinker.

Account of the preparation and publication of this scholar's writings as part of the Corpus Christianorum, with special emphasis on his Periphyseon.

Outline of this thinker's system, in the context of early Irish spirituality.