in Eastern Christianity, type of monastic life (monasticism) in which practitioners seek divine quietness (Greek hēsychia) through the contemplation of God in uninterrupted prayer. Such prayer, involving the entire human being—soul, mind, and body—is often called “pure,” or “intellectual,” prayer or the Jesus prayer. St. John Climacus, one of the greatest writers of the Hesychast tradition, wrote, “Let the remembrance of Jesus be present with each breath, and then you will know the value of the hēsychia.” In the late 13th century, St. Nicephorus the Hesychast produced an even more precise “method of prayer,” advising novices to fix their eyes during prayer on the “middle of the body,” in order to achieve a more total attention, and to “attach the prayer to their breathing.” This practice was violently attacked in the first half of the 14th century by Barlaam the Calabrian, who called the Hesychasts omphalopsychoi, or people having their souls in their navels.

St. Gregory Palamas (Palamas, Saint Gregory) (1296–1359), a monk of Mt. Athos and later archbishop of Thessalonica, defended the Hesychast monks. In his view the human body, sanctified by the sacraments of the church, is able to participate in the prayer, and human eyes may become able to see the uncreated light that once appeared on Mt. Tabor on the day of Christ's transfiguration. The teachings of Palamas were confirmed by the Orthodox Church in a series of councils held in Constantinople (1341, 1347, 1351). Hesychast spirituality is still practiced by Eastern Christians and is widely popular in Russia through the publication of a collection of Hesychast writings, known as the Philokalia, in Greek in 1783 at Venice and in Slavonic in 1793 at St. Petersburg.