CATECHISM OF THE CATHOLIC CHURCH
SECOND EDITION

Paragraphs 417–421

417 Adam and Eve transmitted to their descendants human nature wounded by their own first sin and hence deprived of original holiness and justice; this deprivation is called "original sin".
418 As a result of original sin, human nature is weakened in its powers, subject to ignorance, suffering and the domination of death, and inclined to sin (this inclination is called "concupiscence").
419 "We therefore hold, with the Council of Trent, that original sin is transmitted with human nature, "by propagation, not by imitation" and that it is. . . 'proper to each'" (Paul VI, CPG § 16).
420 The victory that Christ won over sin has given us greater blessings than those which sin had taken from us: "where sin increased, grace abounded all the more" (Rom 5:20).
421 Christians believe that "the world has been established and kept in being by the Creator's love; has fallen into slavery to sin but has been set free by Christ, crucified and risen to break the power of the evil one. . ." (GS 2 § 2).