This series on Orthodox Spirituality was delivered to St. Mary's Students and Graduates group. See Fr. Athanasius' book on the same topic under 'Publications' on this website.
A Short Introduction to Spirituality
The Virtues of Obedience and Patience
The Virtue of Chastity
The Virtue of Discernment
Presumptuous Sins - Part 1
Presumptuous Sins - Part 2