Albus Dumbledore:"Do you know why can't Quirinus Quirrell stand you touching him, in the basement?" [Harry says no with the head]"Itwas because of your mother. She sacrificed herself for you, and something like this leaves the mark." [Harry touches his scar] "No, no. It's not a visible mark. It... [continue to read »]
from the book "Harry Potter and the Sorcerer's Stone" by Joanne Kathleen Rowling