The Arena, St. Ignatius Brianchaninov

Ascetical Homilies of St. Isaac the Syrian, St. Isaac the Syrian

Beginning to Pray, Anthony Bloom

Centuries on Love, St. Maximus the Confessor

Discourses and sayings, St. Dorotheos of Gaza

Exposition of the Orthodox Faith, St. John Damascene

The Field, St. Ignatius Brianchaninov

Fifty Spiritual Homilies, St. Macarius the Great

The Forgotten Desert Mothers, (collection by Paulist Press)

The Ladder of Divine Ascent, St. John Climacus

Little Russian Philokalia, (several volumes and multiple authors)

Orthodox Psychotherapy, Metropolitan Hierotheos

Orthodox Spirituality, Dumitru Staniloae

Our Thoughts Determine Our Lives, Elder Thaddeus of Vitovnica

Paradise of the Fathers (two volume set)

Passions & the Virtues, St. Paisios of Mount Athos

The Philokalia, (several volumes and many authors)

Praktikos & Chapters on Prayer, Evagrius the Solitary

Saying of the Desert Fathers, (collection by Cistercian Publications)

The Spiritual Life, St. Theophan the Recluse

The Spiritual Meadow, John Moschos

Unseen Warfare, Lorenzo Scupoli, Nicodemus of the Holy Mountain & St. Theophan the Recluse