<!doctype html public «-//w3c//dtd html 4.0 transitional//en»> http-equiv=content-type> Eriugena’s importance to negative theology is beyond question. In seeking a language for the inexpressible, drawing on Dionysus the Areopagite, he developed the concept of a negative-positive theology. This study analyzes Eriugena’s ‘hypertheology’ and also includes a new translation of key passages from the Periphyseon. Its intended audience includes philosophers and theologians as well as philologists.