“To have a society, you first need an institutional framework: that’s constitutional law. You need a system of punishment: that’s criminal. You need to know that you have a system in place that will make those other systems work: that’s civil procedure. You need a way to govern matters of domain and ownership: that’s property. You need to know that someone will be financially accountable for injuries caused you by others: that’s torts. And finally, you need to know that people will keep their agreements, that they will honor their promises: and that is contracts.”