Hi - I'm Lawyer.
The philosophy of law is commonly known as jurisprudence. Normative jurisprudence is essentially political philosophy, and asks "what should law be?", while analytic jurisprudence asks "what is law?" John Austin's utilitarian answer was that law is "commands, backed by threat of sanctions, from a sovereign, to whom people have a habit of obedience".Natural lawyers on the other side, such as Jean-Jacques Rousseau, argue that law reflects essentially moral and unchangeable laws of nature.
You'll probably see me posting lots of brainteasers. I have over 20 books on brainteasers so I'll let you share them too:)