Lesslie Newbigin remains one of the most important missionary theologians of the twentieth century. In responding to the challenges of late modernity, he developed a fresh paradigm of missionary theology and cultural engagement that continues to be compelling and prophetic. This book also explores the way in which Michael Polanyi's understanding of "e;personal knowledge"e; helps to give language and metaphor to Newbigin's convictions about cultural engagement and responsive witness and suggests vibrant insights and applications for mission today.