“We're making a new pact... That no matter what, no matter what sort of risks we take on ourselves, we will give our life to any one in this room, no questions asked. We will sacrifice for each other, as long as the outcome is right. If Voldemort has a wand to my head, and says that he's going to kill me if James doesn't turn, then so be it. He can kill me. Are we all agreed on this?" - Sirius Black”
Book:Forever Alive