The question of a general minimum of moral standards also arises in the age of science and technology. In the postmodern age, the answer to this question must be based on rational arguments. At the same time, however, the basis of the answer must be comprehensible to each individual in order to preserve the autonomy of the subjects. This search for norms that can be supported by arguments from the scientific world will be explored in the book. The aim of the work is to find and justify a core of moral norms in the plural postmodern environment.