Re: Regardless of which side of the fence you are on.
"A "principle" not codified isn't actually a law."
Your statement is correct wrt to many countries/jurisdictions. However, the UK has:
- Statute law: laws adopted by Parliament, i.e. what you are referring to
- Common law: based on custom, assumed to have existed always, but not codified
- Case law: based on court decisions
Which country are you based in?