William Cavanaugh and Russell Blackford, "Putting Religion in its Place: The Secular State and Human Flourishing - A Debate" - http://www.abc.net.au/religion/articles/2014/06/24/4031567.htm. I just came across this exchange between Russell Blackford, based at Newcastle, and William Cavanaugh based in Chicago. Both are incisive and generous in their responses to each other, and both of their recent books are well worth reading. A few years ago Blackford kindly presented at our university's Religion in Political Life seminar series on the release of Freedom of Religion and the Secular State. I find Cavanaugh's The Myth of Religious Violence, quite useful for generating discussion in courses on processes of secularization and religious violence. In any case, it is always good to see civility and a bit of humor between thinkers of different positions.