‘My killer son couldn’t get any more evil’

Peter Lanza also told The New Yorker magazine in a series of interviews that he believes Adam would have killed him, too, if he had the chance. And he often contemplates what he could have done differently in his relationship with Adam, although he believes the killings couldn’t have been predicted.
“Any variation on what I did and how my relationship was had to be good, because no outcome could be worse,” Peter Lanza told the magazine. “You can’t get any more evil. ... How much do I beat up on myself about the fact that he’s my son? A lot.”