Mysticism (Stanford Encyclopedia of Philosophy)
Stanford Encyclopedia entry on mysticism with significant coverage of the Christian contemplative tradition.
You might also explore
Christian Classics Ethereal Library
Free digital library of classic Christian texts including works by Meister Eckhart, John of the Cross, Teresa of Avila, and the Desert Fathers.
On the Prayer of Jesus
Ignatius Brianchaninov
Classic guide to the Jesus Prayer practice and hesychast tradition by the 19th-century Russian bishop and spiritual writer.
The Philokalia
Collection of texts on contemplative prayer by Eastern Orthodox monks spanning the 4th to 15th centuries, central to the Hesychast tradition.
The Philokalia: The Eastern Christian Spiritual Texts
Allyne Smith
Annotated selections from the Philokalia, the foundational anthology of hesychast writings on the prayer of the heart and contemplative stillness.
Autobiography of St. Teresa of Avila
St. Teresa of Avila
In this classic of Christian mysticism, a Carmelite nun describes her struggles and ultimate union with God. St. Teresa recounts her childhood, spiritual crises, and embrace of the contemplative life.