Originating from the observation of the protean meaning of
ratio in Eriugena’s
Periphyseon, the book has the purpose to trace and outline the dynamics of the word used in different philosophical texts from John Scottus Eriugena to Thomas Aquinas. Nine philosophers are taken into consideration: Anselm of Canterbury, Alan of Lille, Gilbert of Poitiers, Peter Abelard, Albertus Magnus, Bernard of Clairvaux, Honorius Augustodunensis, Anselm of Laon, Nicolaus Ambianensis. The meanings of
ratio are analyzed according to the broader senses directly related to the kind of philosophy each author represents. The examination of the authors is completed with the crystallization of the notion in its Thomistic articulation. Some meanings absent from the available dictionaries are taken into account.
Frankfurt/M., Berlin, Bern, Bruxelles, New York, Oxford, Wien, 2001. IX, 129 pp., num. fig.
Contents: The concept of ratio from John Scottus Eriugena to Thomas Aquinas: John Scottus Eriugena (ratio ditissima)
– Anselm of Canterbury (ratio gnoseologica) – Alan of Lille (ratio logica) – Gilbert of Poitiers (ratio epistemologica et
ontologica) – Peter Abelard (ratio potissimum logica) – Albertus Magnus (ratio firmior gnoseologica et ontologica) – Bernard
of Clairvaux (ratio rara sed communis) – Typological meanings of ratio – Lexicographical proposals for the meaning