I end with the end
Q10-What is the last line of... NO not 19 years later, last line of the last chapter in Deathly Hallows? Not nineteen years later, the last chapter "Flaw in the Plan" where you-know-who dies

How sad it was, the series ending. Do you remember the line which was hint hint said by: Harry, which ended it all; before we got to see them continue their life in peace.