From philosophy professor James Spiegel:
- Augustine (5th century): Remember that you are a citizen of another kingdom.
- Martin Luther (16th century): Expect politicians to be corrupt.
- Thomas Aquinas (13th century): God has made himself known in nature.
- John Calvin (16th century): God is sovereign over all, including our suffering.
- Jonathan Edwards (18th century): God is beautiful, and all beauty is divine.
- Thomas a’Kempis (15th century): Practice self-denial with a passion.
- John Wesley (18th century): Be disciplined and make the best use of your time.
- Fyodor Dostoevsky (19th century): God’s grace can reach anyone.
- Dietrich Bonhoeffer (20th century): Beware of cheap grace.
- Alvin Plantinga (21st century): Moral virtue is crucial for intellectual health.