This is actually an English question for the book Fahrenheit 451:

Question:

In the country, Montag thinks about Mildred and her possibly dying in the city when the war comes. He feels guilty because, though she is his wife, he does not imagine that her death will make him feel any sadness. What does Granger say about his grandfather to Montag when Montag begins to think about Mildreds possibly dying? How does Grangers message help Montag understand and deal with the way he feels when he thinks of Mildreds death?