The Fiercest Passion
The most fierce passion is anger. In fact it is defined as a boiling and stirring up of wrath against one who has given injury or is thought to have done so. It constantly irritates the soul and above all at the time of prayer it seizes the mind and flashes the picture of the offensive person before one's eyes. Then there comes a time when it persists longer, is transformed into indignation, stirs up alarming experiences by night.
The Praktikos & Chapters On Prayer
p. 18
Evagrius Ponticus, _The Praktikos & Chapters On Prayer,_ trans. John Eudes Bamberger (Kalamazoo: Cistercian Publications, 1970), 18.