Dumbledore shook his head and said, "Quite the opposite, Ali. For you to go to Voldemort alone—that would actually be disadvantageous to him."
"Voldemort appointed Severus to monitor you. If you went to him alone, it would only cause Severus to fail his mission, which would lead Voldemort to trust him less."
"I need Severus to have Voldemort's trust, Ali," Dumbledore said. "And by cooperating with him, you are helping him."
Chapter 450