Lupin is tortured by the idea that he might have already ruined his unborn child's life, simply through his werewolf nature. However, Harry reminds him that a choice that's been made cannot then be unmade – after all, Lupin married Tonks because he loves her, and there's nothing he can do to get rid of that bond.

Voldemort's desire to get rid of all non-pureblood Wizards is really a problem of identity – he's taken it upon himself to decide who is really a wizard and who isn't. However, there's the problem of personal identity – Muggle-born wizards really are just as magical as purebloods, and Voldemort's new restrictions are simply lies.

Lupin notes that Voldemort really knows how best to use his power – the most alarming thing is that he keeps things mysterious, so that nobody knows exactly how strong he is or what he's capable of.