Provides access to both the Gregorii Nysseni Opera Online and the Lexicon Gregorianum Online. Together, these two resources are a complete online critical text edition of Gregory of Nyssa's works based on all available known manuscripts. Gregory of Nyssa Online is accompanied by indices, extensive annotations on biblical, classical and patristic sources, and a comprehensive Greek-German dictionary of the language used by Gregory of Nyssa (the Lexicon Gregorianum).