The hermeneutics of human life is one of the most challenging issues in the fields of bioscience and of ethics today. Recent breakthroughs in bio science challenge the prevalent metaphors and paradigms which define human life in the human and natural sciences, that influence our understanding of «diseases», «illness», «therapy», «aging», «dying», and, consequently, also shape medical practice. In the essays collected in this book, scientists, ethicists, philosophers and theologians bring Bonhoeffer’s ethics and his theological anthropology into dialogue with bioscience and explore current bioethical and anthropological issues. All articles were first presented as lectures at the Third International Bonhoeffer Colloquium at Freie Universität Berlin, 2009. Bonhoeffer’s Ethics, as presented in this book, helps to articulate a semantics of human life which stimulates a debate between science and ethics, and which assists in finding fresh ways for understanding human life and the related tasks of scientific research and medical practice.