The seven deadly sins — known also as the capital vices or cardinal sins — are a classification of vices that has stood at the centre of Western Christian moral teaching for more than fourteen centuries. They are pride, greed, lust, envy, gluttony, wrath, and sloth: in Latin, superbia, avaritia, luxuria, invidia, gula, ira, and acedia. They are called deadly not because they are the gravest single acts a person can commit, but because each is held to be a root — a disposition from which other sins and further immoral behaviour grow.
The grouping was not fixed at a stroke. It was assembled, revised, and re-attributed across centuries, and the names paired to each sin have shifted more than once. Its fullest cultural life came in the Middle Ages, in the morality plays, the sermons, and above all in the work of Dante and Chaucer, where the sins became a map of the soul. In demonology the seven acquired a second identity: each sin was matched to a presiding demon, a pairing fixed most influentially by Peter Binsfeld in 1589, and it is that demonological reading the Aethereal Stories universe inherits and makes literal.
The earliest form of the scheme belongs to Evagrius Ponticus (c. 345–399), a Greek monk and theologian formed by the ascetic life of the Egyptian desert. Evagrius was not cataloguing sins for moral instruction; his concern was spiritual clarity — why prayer faltered, why attention wandered, why even disciplined lives stayed inwardly unsettled. Observing his own inner life and that of the monks around him, he identified eight recurring logismoi — “thoughts” or tempting patterns: gluttony, lust, greed, sadness, anger, acedia, vainglory, and pride. He understood them not as fleeting temptations but as persistent distortions of desire that returned again and again.
Through his disciple John Cassian, Evagrius's eight thoughts passed out of the desert and into the Latin West. Two centuries later Gregory the Great (pope, 590–604) gave the scheme the shape it has kept. In his commentary on the Book of Job, the Moralia in Job (590 CE), Gregory reduced the eight to seven: he folded vainglory into pride and sorrow into sloth, and he added envy. He set pride apart as the root of all the rest, the source from which the seven vices spring. This is the list that endured. It was defended and elaborated in the thirteenth century by Thomas Aquinas in the Summa Theologica, who paired each sin with its opposing virtue, and given its most enduring artistic form by Dante Alighieri in the fourteenth-century Divine Comedy.
A mnemonic preserves the seven in their Latin order — SALIGIA: superbia, avaritia, luxuria, invidia, gula, ira, acedia.