The Evil in us

What are the criteria of good and bad, and how are they determined? The idea of good and bad only began to exist since man won his intellect and took possession of his faculty to think. Moreover what is good to one person may be bad to others. Is it therefore the point of view from which the phenomena are regarded? In view of the manifold aspects in which evil appears, criteria are developed to define it and they are applied to manifestations of evil - especially in recent history such as Nazi-Germany and the apartheid regime of South-Africa. This reveals the relativity of all views, for who is called a bad person but as a rule does not feel so, thus considers himself on the contrary as good person.