Any human trait observed across cultures, time and languages must be considered a universal human trait in the same way all make dogs lift their legs to pee on

Any human trait observed across cultures, time and languages must be considered a universal human trait in the same way all make dogs lift their legs to pee on things. The writings of Shakespeare are relevant today as the day they were written. That's because they cover the human traits of love, jealousy, war, gossip, pride and others. The reasons humans go to war is plainly evolutionary. Those ancestors that raided other tribes and stole their resources (and women) left successors who also had those traits. The peacenik human ancestors are all in the earth, never to be heard of again. That's not to say its hopeless - human traits can be tempered through society - such as limiting murder to that explicitly sanctioned, and introducing laws and concepts around monogamous marriage to prevent single ruling families introducing polygamy and dominating the genetic results. Those things promote peace and harmony but war will always be with us. I used to be a lot more starry eyed about this but I've come to realise how temporary and fleeting peace really is. The only societies that have really prospered are those that have established walls and dedicated resources to making sure they are effective. And I don't mean actual city walls - I mean barriers to conquest.