Guess Who?

This game is about posting some lines from the HP book that someone needs to guess from what book is it and who said it.
Example:
"At least I can get away from Percy at Hogwarts. Now he's accusing me of dripping tea on his photo of Penelope Clearwater. You know."
Ron Weasley, Harry Potter and the Prisoner of Azkaban

The one who will correctly answer the specifies line is going to post a new one and so on.

Here is the first one:
"There are seven secret tunnels on the map, right? Fred and George reckon Filch already knows about four of them. And of the other three -- one of them's caved in, so no one can get through it. one of them's got the Whomping Willow planted over the entrance, so you can't get out of it. And the one I just came through -well - - it's really hard to see the entrance to it down in the cellar, so unless he knew it was there..."

Let the game begin.

Harry Potter, from the Prisoner of Azkaban

"About You-Know-Who. He said ' His gift for spreading discord and enmity is very great. We can fight it only by showing an equally strong bond of friendship and trust--"

Albus Dumbledore, from The Goblet of Fire

"It takes a great deal of bravery to stand up to our enemies, but just as much to stand up to our friends."

Technically, it was Hermione Granger from the Order of the Phoenix, quoting Dumbledore from the Goblet of Fire.

Albus Dumbledore, from the Philosopher's Stone

"It appears there is a connection between the Dark Lord's mind and your own. Whether he is, as yet, aware of this connection is for the moment unclear. Pray he remains ignorant."

Severus Snape, Harry Potter and the Order of the Phoenix

"You--er--your--I mean to say, some of your people were--were involved in those--those thing, were they?"

Muggle Prime Minister, HP and the Half-Blood Prince

"Your grandmother sent yours to me directly, Longbottom"

Minerva McGonagall, Prisoner of Azkaban

"You lost your authority when you lost your wand!"

Bellatrix Lestrange, Deathly Hallows

"You sort of start thinking anything’s possible if you’ve got enough nerve."

Ginny Weasley - Harry Potter and The Order Of The Phoenix


"Never trust anything that can think for itself if you can't see where it keeps its brain"

Arthur Weasley - Harry Potter and the Chamber of Secrets.

"Times like these, dark times, they do funny things to people. They can tear them apart."

Arthur Weasley - Harry Potter and the Half Blood Prince

"People find it far easier to forgive others for being wrong than being right."

That is exact.

Sir Nicholas, HBP!

"My second piece of general advice is to use a nice, simple spell which will enable you to get what you need."

PS: Sorta a trick question, so, head's up! xD

Harry to Ron is Divination, Order of the Phoenix
"Honestly, if your were any slower, you'd be going backward." 

Harry Potter, The Order of the Phoenix

"Well, I don't think much of your manners, my Lord. Turn round and face me like a man, why don't you?

Harry Potter - Harry Potter and the Deathly Hallows

"After all, to the well-organized mind, death is but the next great adventure."

Albus Dumbledore, Harry Potter and the Philosopher's Stone

"Because they've both just been turned down by girls they asked to the ball!"

Harry Potter - The Half Blood Prince

"Montague's just been found in a toilet, Sir."