"You staying alive is not counterproductive, because you're my brother, and your death would impact me. It would impact all the people that care for you," he said.
"Yes, every choice you make can lead to danger, which means that you need to be careful with whom you speak. I need you to avoid speaking to people that could betray you. Yes, I know that there are no guarantees, but past behaviour is a good way to judge. Severus had proven to be loyal and helpful. He helped Dad. He's someone you can trust," he said. "Pettigrew is someone that has not been loyal, has betrayed our family, and has already been in contact with Riddle since his return. The first you can talk to, the second, no. You need to think about these things, that's what I need you to do."