What are the motifs in Everything Is Illuminated: A Novel by Jonathan Safran Foer?

Family is a recurring idea in the book. Jonathan's search for the woman who helped save his grandfather from the Nazis during World War II is fueled by his desire to understand a grandfather he never knew. Jonathan's grandfather died within weeks of arriving in America, leaving behind a wife and a daughter. Jonathan's grandmother gave him a picture of his grandfather with the family that saved him only weeks before Jonathan's trip to the Ukraine. Jonathan, a writer, hopes to find the woman and give her some money as well as his gratitude. Jonathan also hopes to write a book about the trip.