"You do that, don’t you? You figure out what people need, and you give it to them so that they owe you a debt." She chuckled at his surprised look. "I’ve been by your side for nearly four years, Harry. Of course I’ve noticed. You don’t make friends; you make allies. You find people who could be helpful, and then you bring them into your sphere of influence, all the while honing them into more useful tools."