His Eminence Metropolitan Philip joined a gathering of other notable Christian leaders and theologians, including Metropolitan Kallistos Ware, Bishop Hilarion Alfeyev and Catholic author Fr. Richard John Neuhaus, speaking at St. Vladimir's Seminary June 4-8. The event was organized by The Fellowship of St. Alban and St. Sergius, and was titled "Rome, Constantinople and Canterbury. Mother Churches?" Ancient Faith Radio has posted audio of all the lectures.  Metropolitan Philip lectured on Canon 28 of the Fourth Ecumenical Council.