The opposite or absence of good. One form of evil, physical evil, is a result of the "state of journeying" toward its ultimate perfection in which God created the world, involving the existence of the less perfect alongside the more perfect, the constructive and the destructive forces of nature, the appearance and disappearance of certain beings (310). Moral evil, however, results from the free choice to sin which angels and men have; it is permitted by God, who knows how to derive good from it, in order to respect the freedom of his creatures (311). The entire revelation of God's goodness in Christ is a response to the existence of evil (309, 385, 1707). The devil is called the Evil One. See Devil/Demon.