“We don’t want a religious state,” says Muslim Brotherhood member of parliament Ossama Yassin. “We want a modern, civil, democratic state belonging to the people.”

“The question in the eyes of many other Muslims,” according to Georgetown University Islamic studies professor John Esposito, is “are these people really Muslims or not?”

"Pilgrimages are undertaken because people want to move beyond their normal, mundane life," says Virginia Raguin, a professor at the College of the Holy Cross. Raguin is also the curator of a traveling exhibit on pilgrimages in Buddhism, Christianity and Islam.

“When Muslims want to respectfully dispose of a text of the Qur’an that is no longer usable, we will burn it,” says Imam Jihad Turk, director of religious affairs at the Islamic Center of Southern California.

Ten years after 9/11, the American public is “like an individual suffering from post-traumatic stress disorder,” writes ethicist Robin Lovin. “We are unable to return to the old world we thought we understood, but we cannot tolerate the noise and uncertainty of the new world, either.”

“Have we healed? Yes, healed with a hole. It’s never a complete healing, but at least there a willingness to write a new chapter of life,” says Rabbi Joseph Potasnik, a New York Fire Department chaplain.

“You’re not tolerant,” says this Christian philosopher, “if you're indifferent. You're tolerant if you disapprove of the other person's religion but put up with it nonetheless."

College and university students recall 9/11 and reflect on how it affected their spiritual lives.

The years since 9/11 may have brought many Americans new interfaith understanding, but they have also expanded interfaith tensions.

"This decade has been a time of encountering and engaging Islam in a new way that also causes Christians to think about their own identities and understand God and God's love for people beyond the Christian world," says University of Notre Dame history professor Scott Appleby.