The most important task of contemporary science is to serve humanity. It seems that technology develops in two different ways. On the one hand technology does everything to make human’s life carefree, easy and safe. But on the other scientists do their best to solve most pressing problems so that people could once and for all forget about troubles like AIDS, cancer or Alzheimer’s disease. Until tody technical progress was followed by the progress of the humanity but it seems that contemporary hi-technology left behind moral reflections of people. Michael Sandel’s book e Case against Perfection: Ethics in the Age of Genetic Engineering is a moral reflection on those problems accompanied by technological changes. It is an attempt to establish a border that cannot be crossed – on its one side human being is still a human being but on the other one it is just an artifi- cially stimulated machine.