Basically it's just like, if you're my enemy, if you're my rival -- if you're not my friend, if you're not in my family -- I'm much less inclined to apply the golden rule to you.
care spune, in principiu: daca esti dusmanul meu, rivalul meu, daca nu esti prietenul meu, daca nu esti din familia mea, sunt mai putin inclinat sa-ti aplic regula de aur.