"Don't thank me until we see how he takes to it," Remus laughed. He'd provided James with a list of books, but even with theory, Remus was a much more hands-on teacher. It was much easier to get a point through if he could combine the written word with audible lecture and physical demonstration, engage all the senses and hope it stuck in one of them.
Still, Harry's confidence in him wasn't something Remus would ever be able to dismiss lightly. He appreciated it too much.
He still didn't know that he'd done anything to deserve this, but he wasn't going to argue that with Harry. Telling Regulus was a roundabout way of telling the other man how much he appreciated having him in his life. Saying it to Harry wouldn't be the same. So he merely smiled. "I don't know that I'd say that. But, I am happy."