John Cassian
"The Penitential of Finnian" prescribes penances with a view to correcting sinful tendencies and cultivating the contrary virtue. The document shows wide learning and draws on the teaching of John Cassian on overcoming the eight evil tendencies – gluttony, fornication, covetousness, anger, dejection, accidie (laziness), vainglory and pride ("The Institutes", Books 5–12).