"I never forgave myself, Draco. If I had not been such a coward, I could have protected her, I should have protected her. But I did not. I vowed from that day on to protect what was left of her on this Earth, her son. I worked with Albus and the Order in secret for nearly two decades, Draco. Even so, it was not enough. It will never be enough. Potter is a snot, and often an imbecile, but he was her child. I could protect him... for her. And in the end, help him to defeat the Dark Lord and live the life his mother should have, and would want for him and this world. Draco, you are aware Lily Potter was a muggleborn. I was an absolute fool and a coward."