In Christian theology, people are created good and in the image of God but have become corrupted by sin, which causes them to be imperfect and self-interested.[58] Reformed Christians, following the tradition of Augustine of Hippo, believe that this corruption of human nature was brought on by Adam and Eve's first sin, a doctrine called original sin. Reformed theologians emphasize that this sinfulness affects all of a person's nature, including their will. This view, that sin so dominates people that they are unable to avoid sin, has been called total depravity.[59] In colloquial English, the term "total depravity" can be easily misunderstood to mean that people are absent of any goodness or unable to do any good. However the Reformed teaching is actually that while people continue to bear God's image and may do things that are outwardly good, their sinful intentions affect all of their nature and actions so that they are not wholly pleasing to God.