You will not lift a hand against another intelligent creature, for any reason. You must do your nonviolent best to discourage violent behavior in others, too. You are free to defend yourself against attacks by animals, mosquitoes, etc.
Make a self-control roll at the end of any battle. If you fail, roll 3d, add the amount by which you failed your self-control roll, and look up the result on the Fright Check Table.