In this provocative book, philosopher Nicholas Agar defends the idea that parents should be allowed to enhance their children's characteristics. * Gets away from fears of a Huxleyan 'Brave New World' or a return to the fascist eugenics of the past. * Written from a philosophically and scientifically informed point of view. * Considers real contemporary cases of parents choosing what kind of child to have. * Uses 'moral images' as a way to get readers with no background in philosophy to think about moral dilemmas. * Provides an authoritative account of the science involved, making the book suitable for readers with no knowledge of genetics. * Creates a moral framework for assessing all new technologies.