The main object of Law is to regulate the relationship between Individuals in the society. An ancient Jurist Salmond defined law as "the body of principles and applied by the State in the administration of justice'.
but in my view "the rule , subject Follow it or subject have to follow it is an Law".
Nature of law in my view: " law is pendulized beteen Liquidity and Stonness." in other words
"Law is like a cube of ice, because it is strong and soft too.