From Wikipedia: Justice
According to most theories of justice, it is overwhelmingly important: John Rawls, for instance, claims that "Justice is the first virtue of social institutions, as truth is of systems of thought."[3]: Justice can be thought of as distinct from and more fundamental than benevolence, charity, mercy, generosity or compassion. Research conducted in 2003 at Emory University, Georgia, involving Capuchin Monkeys demonstrated that other cooperative animals also possess such a sense and that "inequality aversion may not be uniquely human."[4] indicating that ideas of fairness and justice are of an instinctual nature.


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