"It’s like in the great stories, Mr. Frodo. The ones that really mattered. Full of darkness and danger, they were. And sometimes you didn’t want to know the end. Because how could the end be happy? How could the world go back to the way it was when so much bad had happened? But in the end, it’s only a passing thing, this shadow. Even darkness must pass. A new day will come. And when the sun shines it will shine out the clearer."
"If you pay attention, there is a very important scene in the Room of Requirement when the fire is personified in each Hogwarts House. This shows that every House has two sides. Good and evil." - David Yates.