In the previous books, Harry is written as a child, but Rowling states that in the fourth novel, Harry Potter and the Goblet of Fire, "Harry's horizons are literally and metaphorically widening as he grows older."
Nos libros anteriores, Harry aparece como un neno, pero Rowling comentou que na cuarta novela, Harry Potter e o Cáliz de fogo, "os horizontes de Harry vanse ampliando literal e metaforicamente a medida que medra".