Contract law is just a body of law regarding... well... contracts.
General law is another phrase used to describe the law of contract or commerce as it applies to government.
Quantum meruit is a Latin term meaning "as much as he has deserved." In contract law, it refers to a legal principle that allows a person to claim a reasonable amount of compensation for goods or services rendered even in the absence of a formal contract. It is commonly used when there is an implied contract or when the terms of the contract are unclear or incomplete.
The origin of the phrase "Written in Stone" most likely comes from the Law of Hammurabi which states that the law as written cannot be changed by anyone that follows and it was 'written in stone' so that it could not be changed. Its alternate saying, linked below, is something that is changeable.
There is no such phrase as "eat you".
There is no such phrase. There is a word rampage. It is of Scottish origin, perhaps from RAMP, to rear up.
It would not be a valid contract. A contract to break the law is illegal.
No, a contract cannot supersede the law. The law always takes precedence over any agreements made in a contract.
The phrase of Greek origin referring to the common people is "hoi polloi."
Private laws are those that do not apply to everyone. An example of private law is a contract. As long as it is not illegal, you can contract for many things or you contract away your rights.
The idiom "finder's keepers" actually refers to a Roman law. The law basically meant that once something was unowned or abandoned, whoever found it could keep it.
Generally, the action would involve breach of contract.
Contract law is a large and complex area of the law. You can find a summary of the main principles of contract law by visiting the Wikipedia page titled English contract law.