Henry’s desire to listen to the tapes of Mitt’s voice suggests that he’s ready to think about the tragic loss. Before this, it seems, he was reluctant to do anything but move forward with life, as evidenced by Lelia’s frustration with him and her decision to leave. His response, however, makes sense within the context of his upbringing, since his father modeled stoicism and silence in the face of hardship. Nonetheless, Henry has now decided to recognize that he’s hurting, and instead of throwing himself into work or somehow figuring out a way to think about something else, he listens to the recordings of Mitt.