The calming voice of Krista Tippett floats across public radio airwaves nationwide each week as she interviews guests about the depths and foundations of their beliefs, and religion’s role in the world today. The 49-year-old host of “Speaking of Faith,” heard Sundays at 7 a.m. on the District’s WAMU 88.5, was in town recently to speak about her new book, “Einstein’s God: Conversations about Science and the Human Spirit.” In a shift from interviewer to interviewee, Tippett shared with the Washington Examiner by e-mail her own thoughts on faith, and the questions that a faithful life inspires.

Do you consider yourself to be of a specific faith?