Is Augustine's view of human nature optimistic or pessimistic?

Augustine contends that the first evils in creation are evil acts of free will or the so-called sins. Made as rational beings with free choice by God, some angels and the first human beings, Adam and Eve, turned away from their very Creator. The first humans’ disobedience to God in the Garden of Eden results in what is called ‘the fall of man’. ‘The fall’ is thus the transition from being an innocent image of God to being a creature with corrupted or fallen human nature.