'This is emphatically an important book – one of the most innovative and wide-ranging essays in philosophical theology to appear in recent years – from a scholar quite capable of tackling the most sophisticated minds of secular academic philosophy on their own ground, and showing that theology has a serious contribution to make to our thinking about thinking. This seriously original work – which addresses the fundamental question of what we think we are doing/claiming when we say we are speaking truthfully – has the capacity to make a major difference in its field.' Rowan Williams, Master of Magdalene College, Cambridge; formerly Archbishop of Canterbury