"And that disgusts you. Is that why you are taking magical lessons from Albus? Because you do not want to be a dark wizard? Are you hoping to fit in with this hypocritical lot?" he asked, some amusement in his voice while he spoke. The forceful statement from Peter that followed, though, made Gellert's expression turn serious. "And normal magic is forever without blame?"
"Do not vilify a single branch of magic purely because of popular opinion. Dark magic is not alone in its capability to kill. Normal magic can manage that just as well. If you are hoping to define branches of magic by such black and white methods as good and evil, then you will be here a long time."