The twins shook their heads, but still, they got the gist of what their brother was saying. "Two things happened during that attack: first, he got really, really scared. I mean, he was a teenager and had no way of protecting himself against muggle bombs. And second, he became determined that he would do everything in his power to not die! So, he took measures to ensure that. He set up a plan ... a brotherhood of sorts to separate the Wizarding World from the muggle world. Magical children are often met with scorn or even violence. He wanted to stop that. Unfortunately, the means he used to ensure his immortality backfired spectacularly, driving him insane."