Saint Nikolaos Cavasilas (c. 1320-71) was a well known Theologian and mystic in the Orthodox church. He was born in Thessaloniki and, as a young man, was involved in politics. Little is known of his later life, however, he is remembered for his two treaties, Life in Christ and The Exposition of the Divine Liturgy. These volumes are generally regarded as classics of Eastern sacramental theology.
- Nikolaos Cavasilas, Life in Christ, translated by C.J. de Catanzaro (1974);
- Nikolaos Cavasilas, Interpretation of the Divine Liturgy, translated by J.M. Hussey and P.A. McNulty (1960).