How does biotechnology touch on human destiny? What are its promises and challenges? In search of a response, the present volume turns to the thought of Hans Jonas, one of the pioneers and founding fathers of bioethics. The continued relevance of his ideas is exemplified by the way Jürgen Habermas applies them to the current debate. The chief promise of biotechnology is to increase our freedom by overcoming the limits of the human condition. The main risk of biotechnology, as both Jonas and Habermas see it, is to diminish or outright abolish our capacity for responsibility and morality. It is argued that the greater freedom is not simply freedom from constraints but freedom for our destiny: the freedom to be the benevolent, responsible, and spontaneous authors of our lives, capable of communion and love. The touchstone for evaluating any biotechnological procedure has to be this greater freedom. Stephan Kampowski is Associate Professor of Philosophical Anthropology at the Pontifical John Paul II Institute for Studies on Marriage and Family in Rome. He is the author of "Arendt, Augustine, and the New Beginning: The Action Theory and Moral Thought of Hannah Arendt in the Light of Her Dissertation on St. Augustine" (2008). " 'A Greater Freedom' is an excellent and timely introduction to the thought of two eminent philosophers and their work on biophilosophy, bioethics, and biotechnology: Hans Jonas and Jürgen Habermas. Stephan Kampowski enters into an astute dialogue enriched by other important interlocutors (Spaemann, Arendt, Kass) and is deeply guided by the theology of love. A most instructive and rewarding reading for those who want to grasp the boon and bane of biotechnology. Reinhard Hütter, Professor of Theology, Duke University Divinity School.