Benedictine rule

The Pope has several reasons to go to Turkey. One of them puts him in the centre of the most burning issue of the day:

[the] attempt to help spark Islamic theological reform. According to this analysis, the pope's speech in Regensburg on the necessary unity of faith and reason was aimed as much at the secularized West as it was at the Islamic world.

"There's no doubt in my mind, he states it clearly, that Islam can evaluate when a passage of the Koran was written: was one early, was one later, was one in a certain context and one in another," Moynihan said. "Those remarks in the Regensburg speech make very clear that he's inviting Islam to engage in a process of self-evaluation and examination and of exegesis of the Koran, which is extremely difficult, controversial. But in my view, it's absolutely clear that he's inviting them to engage in that." [Robert Moynihan, a medieval historian and editor-in-chief of the magazine Inside the Vatican]

Also worth a read is Joshua Treviño's lament for Hagia Sophia.