Reverend William Sloane Coffin on Modern Religion and Politics.

The famed clergyman was involved in anti-war protests during the Vietnam War. He now leads a church in New York City, where he champions the poor, gays and lesbians, and helps organize against the nuclear arms race. Love, he says, is at the heart of his activism.

Historian Andrew Preston says questions in an undergraduate class her was teaching at the start of the 2003 invasion of Iraq spurred the research for his new book, Sword of the Spirit, Shield of Faith. "Once I started looking for religion [in U.S. foreign policy], it was everywhere," he says.

New Yorker Washington correspondent Ryan Lizza spent four days with Michele Bachmann and her staff aboard their campaign jet in late June. His profile looks at the writers, beliefs and books that Bachmann has specifically mentioned as influences in her life.