Hesychasm, from Greek hēsychia, stillness, is the contemplative tradition of the Orthodox Church, rooted in the desert fathers and flourishing on Mount Athos. Hesychasts practise the Jesus Prayer, sometimes with attention to breath and posture, seeking the vision of the uncreated light. Gregory Palamas defended them in the fourteenth century.
Hesychasm
The Eastern Christian tradition of inner stillness and unceasing prayer of the heart, especially the Jesus Prayer.