St. Augustine had some big ideas about free will and grace that changed how many Christians think about these topics. But these ideas also brought some challenges. Here are the main points:

1. Understanding Free Will:

   • Augustine believed that divine grace, which is God's help, is really important for getting salvation, or being saved.
   • This made people think about how much choice humans actually have. It caused arguments among different religious thinkers about how much control we have over our actions versus God's power.

2. Confusion and Different Beliefs:

   • His ideas led to debates, like one called Pelagianism. In this view, some people thought grace wasn’t necessary for salvation. This created groups with different beliefs within Christianity.

To solve these problems, it's important to have a clearer view of how grace and free will work together. This can help bring people together while still respecting Augustine's important ideas.