In today's General Audience, Pope Benedict XVI spoke about Maximus of Turin, who was bishop of Turin in a time of growing unrest, beginning in 398. Turin was a place to which many people fled from barbarian invaders. The homilies of Maximus were preached to the wealthy, often speaking of their civic duties at a time when the Roman authority was declining. The Pope spoke about the importance of paying taxes and commitment to the poor, saying that "living a Christian life means observing one’s civic duties."
An article is available from Asia News. Full translations are available from the Vatican, Zenit and from Teresa Benedetta at Papa Ratzinger Forum.
Here is a quote from the Holy Father's words in English at the end of the Audience (from Zenit):
"Like many other Bishops of the time, Maximus found himself called upon to take on greater civic authority and responsibility.
"His example and teaching remind us that, whatever the age in which they live, Christian believers are called upon to carry out faithfully their duties as citizens, working to imbue temporal society with the spirit of the Gospel, and striving to achieve a vital synthesis between their duties as citizens of the earthly city and their commitment to work for the coming of God’s Kingdom of holiness, justice and peace."