Allen E. Buchanan, Duke University

"an important book worth reading independent of one's views about the topic. It is well argued, clearly written, and presents a comprehensive analysis of the relevant key questions in the debate. To my knowledge this volume is the most wide-ranging exploration on human enhancement, and I would recommend it to anyone wanting to get a good grasp of the current debate. Both camps, bioconservatives and anti-anti-enhancement/pro-enhancement people, will benefit from the arguments Buchanan advances." - Fabrice Jotterand, Notre Dame Philosophical Reviews

"a remarkable book that argues in favour of biomedical enhancement ... this book is admirable for its rich inventory of new ideas and its unmerciful criticism of the all-too-convenient arguments which abound in the usual ethical literature. I wholeheartedly recommend this book to everybody interested in bioethics" - Christoph Henning, Journal of Critical Realism

"A level-headed discussiion of ethical issues raised by prospects of biotechnological enhancement... A great deal of rhetoric is thrown about. What we need, and what the author brings, is clarity, dividing his analysis into eight sections on character, human nature, consequences, justice, potential abuses and the rish of a new eugenics." - scimednet.org