From philosophy professor Jim Speigel:
1. Augustine: Remember that you are a citizen of another kingdom.
2. Martin Luther: Expect politicians to be corrupt.
3. Thomas Aquinas: God has made himself known in nature.
4. John Calvin: God is sovereign over all, including our suffering.
5. Jonathan Edwards: God is beautiful, and all beauty is divine.
6. Thomas a’Kempis: Practice self-denial with a passion.
7. John Wesley: Be disciplined and make the best use of your time.
8. Fyodor Dostoevsky: God’s grace can reach anyone.
9. Dietrich Bonhoeffer: Beware of cheap grace.
10. Alvin Plantinga: Moral virtue is crucial for intellectual health.
Read the whole thing for an explanation of each point.