Abstract
Antoni Kępiński, one of the most famous Polish psychiatrists, points to man as an ethical being. The philosopher is aware that particular moral norms have their different origins. According to his concept, their primary source is natural law. From it stem basic human decisions. In addition to this most important source, Kępiński also lists other sources that may also have an impact on human decisions. As one of the few professors, he points to genetic predispositions as one of the possible sources of human morality. Social influences are also important to him.