Odin craved knowledge to ensure the safety of the gods and the world, but the knowledge he was after was only knowable by the dead, so he impaled himself on his spear and hanged himself from one of the branches of Yggdrasil, there he stayed for nine days and nine nights on the border of life and death, at which point he succeeded in his quest.
Don’t trust the living or the dead, put your trust in those inbetween, put your trust in Odin 🙌