Are you sure it isn't "Justice is a..."
to rephrase the definition "Justice is a fundamental social value aiming to harmonize human relations with the stake for all in the orderly existence of society",
Justice is a system which is worthy and important in a culture/society/group which tries to make peace and order for everyone.
social value=something that is important and worthy in a culture/society/group
I hope this helps!
- For Teachers