Acedia

Lore & Background

In ancient Greece, acedia originally meant indifference or carelessness. Homer in the Iliad uses it to describe soldiers heedless of a comrade and the body of Hector lying unburied and dishonored. Hesiod uses it in the sense of 'indifferent.' Peter Toohey argues that acedia, even in ancient times, was synonymous with depression.

In the late fourth century, Evagrius of Pontus characterized acedia as 'the most troublesome of all' the eight genera of evil thoughts. His contemporary, the Desert Father John Cassian, depicted the apathetic restlessness of acedia, 'the noonday demon,' in the cenobitic monk. The Benedictine Rule directed that a monk displaying outward signs of acedia should be reproved, and if he did not amend, be subjected to punishment.

In the Middle Ages, the term appears in Dante's Divine Comedy and Chaucer's parson's list of vices. Thomas Aquinas, in his Summa Theologica, identifies acedia with 'the sorrow of the world' that 'worketh death,' and defines it as 'sorrow about spiritual good in as much as it is a Divine good.' He considers it a mortal sin when reason consents to man's flight from the Divine good, leading ultimately to despair that ends in suicide.

Reader's Guide

Acedia's significance lies in its evolution from a Greek term for indifference to a central concept in Christian monastic spirituality and moral theology. In early monasticism, it was understood as a demonic temptation—the 'noonday demon'—that caused restlessness, inability to work or pray, and a dangerous apathy. Thomas Aquinas systematized it as a sin directly opposed to spiritual joy, a sorrow that turns one away from the divine good. The term later became folded into the medieval seven deadly sins as sloth, though its specific meaning of a restless, bored, and despairing state remained distinct in theological and literary treatments.

In modern times, after nearly dying out, acedia was revived in the 20th century, appearing in the writings of Aldous Huxley and Ian Fleming. Literary critics such as Walter Benjamin used it to analyze baroque tragic heroes, including Shakespeare's Hamlet, seeing in their indecisiveness a form of 'saturnine acedia.' Contemporary writers like Kathleen Norris have argued that acedia is not simply laziness but a state of restlessness, hopelessness, and lack of caring that can affect any long-term vocation. The term continues to be used in discussions of depression, boredom, and spiritual desolation, bridging ancient and modern understandings of human malaise.

Did You Know?

• Evagrius of Pontus, a late fourth-century monk, called acedia 'the most troublesome of all' the eight genera of evil thoughts.
• Thomas Aquinas defined acedia as 'sorrow about spiritual good in as much as it is a Divine good' and linked it to despair that can end in suicide.
• The term acedia had all but died out by the early 20th century but was revived after the two world wars, appearing in works by Aldous Huxley and Ian Fleming.