Quora is a social media website where people ask and answer all sorts of questions.
All societies and all groups should be made up exclusively of consenting members. That means each individual member chooses to join and is free to leave.
Consent means respecting each individual’s right to say no. No one can do anything to your body without your permission.
On this one foundational principle, the most peaceful, prosperous, fair, and free society humanly possible would flourish.
There is only one law needed in this society:
Every individual person has the right to exclusive control over what they do with their body, and what happens to it. Therefore, each person must acquire consent before taking any action that would violate this right of others.
Cleary this outlaws slavery, murder, rape, and assault.
But it does not rule out self-defense. Since anyone who is attacking you is violating your body, you are free to respond by protecting your autonomy. You are free to defend your right to give or withhold consent.