Peter Gilbert received his doctorate from the Catholic University of America in 1995 in the field of patristics; his dissertation was on the theological poetry of St. Gregory of Nazianzus. He subsequently taught for three years at an Orthodox seminary in Albania (Akademi Teologjike-Hieratike Ngjallja e Krishtit, i.e., “Resurrection of Christ Theological Academy”), and for seven years at St. John's College in Santa Fe, New Mexico. He has also taught courses, briefly, at Seton Hall University in South Orange, New Jersey (on World Religions) and, via the internet, at the Catholic University of Lviv (an online course on Eastern Christianity). From 2005 to 2008 he collaborated on a project aimed at founding an Eastern Catholic Great Books college (Transfiguration College) in the suburbs of Chicago; unfortunately, the project never came to fruition.
In 2011, Dr. Gilbert joined the faculty at the Lyceum. Since then, he has taught classes throughout the curriculum, but chiefly the following: Old and New Testaments; Greek and Latin; Medieval History; Writing (Research Paper); and Drama. Since 2013 he has directed the school’s annual Shakespeare production and, on those days when the school sings at divine liturgy, or when Mr. Langley is absent, Dr. Gilbert fills in as director of the school choir. He is working on a book on John Bekkos, a thirteenth-century Patriarch of Constantinople who supported the Union of Lyons.