Philip Kariatlis is a lecturer of theology at St Andrew’s Greek Orthodox Theological College, Sydney, Australia. In 2010 he received his doctorate in Ecclesiology from the Sydney College of Divinity. His research interests lie in Church doctrine, specifically its existential and salvific significance. He translated the doctoral dissertation of Archbishop Stylianos (Harkianakis) entitled The Infallibility of the Church in Orthodox Theology (2008). He is a member of the Faith and Unity Commission of the National Council of Churches in Australia.