The paper deals with the ethics of biotechnological enhancement of human qualities such as intelligence, health and lifespan. In contemporary bioethics three views have emerged concerning the moral permissibility of such a biotechnological enhancement of humans. While bioconservatives reject it as morally impermissible and dangerous, bioradicals welcome it as permissible and desirable. Between these two extremes we find bioliberals who admit some types of enhancement, under certain conditions. These debates are still overshadowed by fear of bioethics, but this discredited term needs to be rehabilitated because it turns out that there are both desirable and undesirable forms of eugenics., Tomáš Hříbek., and Obsahuje poznámky a bibliografii