Every human being bases his version of righteousness or justness on his beliefs, both personal and family and social. What is fair for one will not be the same for the other. Beliefs can be limiting or empowering and wisdom of every human being should be in recognizing the other as his or her partner instead of seeing it as something contrary to the understanding that the other person is seeing and judging and acting according to a pattern of beliefs that you consider correct. The problem is that they believe that beliefs can not change and it is throughout our lives when we realize that we must modernize or change our beliefs in order to continue evolving.