"It's very simple, Hermione. Since the end of the war, my family has had very few allies. No allies really, except for Rodolphus. He's the only one who has never been afraid to be seen with us in public, to let it be known that he wasn't ashamed of the Malfoy family. Perhaps honor doesn't mean as much to Mudbloods, but it does to proper wizards and witches."