Throughout the book, the importance of companionship has been paramount. Victor's creature has begged for a companion, claiming that he is utterly miserable because he is alone, and he has threatened to render Victor as alone and miserable as he is if Victor refuses to comply with his demands. Even Victor, when he first isolated himself from human company to make his creature, grew desperately ill immediately upon its completion and after many months of being alone, ignoring the letters from his family, and so on. He was only able to recover his health with the support of his best friend, Henry Clerval, though it takes many months of being nursed and cared for to restore him. Companionship, it seems, is not only necessary for happiness but for survival as well.
In chapter 21, Victor is told that his friend, Henry, has been murdered, and when Victor sees the body, he says, "The human frame could no longer support the agonies that I endured, and I was carried out of the room in strong convulsions." Alone once more, Victor quickly grows ill again; with the absence of companionship, he suffers terribly and cannot get well. He convalesces for some time, but when Victor learns that his father has come to him, he says, "Nothing, at this moment, could have given me greater pleasure than the arrival of my father." No longer alone, Victor begins to feel better, and he tells Walton, "the appearance of my father was to me like that of my good angel, and I gradually recovered my health." Once again, companionship and the care of a loved one is enough to save Victor's life, showing that it is necessary for both happiness and well-being.