What is reciprosity?
Reciprocity means that just as we would not like to be killed,
robbed, abused and so forth, so would all other living beings not
like to have these things happen to them. One can put this
principle of reciprocity quite simply by saying "do not act towards
others in a way which you would not want them to act towards you".
Given these principles of equality and reciprocity, it is not hard
to see how they stand behind, how they create the foundation for
the rules of good conduct.