Okay kiddo, so you want to know about Dag the Wise? Well, he was a really smart guy who lived a long, long time ago in a far-off place called Scandinavia.
Dag was so wise because he knew a lot of things about how to live a good life and how to behave well. He was what we call a "sage" - someone who is really wise and shares their wisdom with others.
One thing that Dag was particularly good at was storytelling. He would tell stories that taught important lessons about how to be kind, brave, and generous. He also knew about things like medicine, farming, and building houses.
People would often come to Dag with their problems and he would give them advice on how to solve them. He was like a counselor or a therapist - someone who helps others feel better and make good choices.
So, that's who Dag the Wise was. A very smart man who knew a lot about how to live a good life and help others. Pretty cool, huh?