Book excerpt: The Edge of Words is Rowan Williams' first book since standing down as Archbishop of Canterbury. Invited to give the prestigious 2014 Gifford Lectures, Dr Williams has produced a scholarly but eminently accessible account of the possibilities of speaking about God – taking as his point of departure the project of natural theology. Dr Williams enters into dialogue with thinkers as diverse as Augustine and Simone Weil and authors such as Joyce, Hardy, Burgess and Hoban in what is a compelling essay about the possibility of language about God.