There is nothing new under the sun. - Solomon
All people are messed up. All. Every. You. Me. All. Those people over there. Before you try to fix someone else, fix yourself.
Mankind has built some pretty cool stuff. Eventually, it all breaks. Cars, computers, smart phones....did I mention cars? I sure did. You get my point.
What is "wisdom"? It's knowledge about various things that stands the test of time. It was true thousands of years ago, it is just as true today. It usually involves people. How we should act. How we should interact. How not to be a jerk. How to be a good person.