This is a very compact but complete system of ethics. It is very simple, brief, and yet powerful based on the following:

The Guiding Principal

All (human) beings are born equal and remain equal every day of their lives.

The below Principals are only sub-principals for the first one

2) Person is the measure of all accounts.

3) Everyone is free to pursue their own happiness and the results of their pursuit and obliged to respect everyone else’s equal freedom without limiting anyone else’s freedom.

You can find the rest of it here.