"Well..,all right. I'll try and help. But it'll have to wait until next term, I'm afraid. I have a lot to do before the holidays. I chose a very inconvenient time to fall ill." (Chapter 10)

"Well - let's drink to a Gryffindor victory against Ravenclaw! Not that I'm supposed to take sides, as a teacher." (Chapter 12)

“Don’t expect me to cover up for you again, Harry. I cannot make you take Sirius Black seriously. But I would have thought that what you have heard when the dementors draw near you would have had more of an effect on you. Your parents gave their lives to keep you alive, Harry. A poor way to repay them - gambling their sacrifice for a bag of magic tricks.” (Chapter 14, after he got Harry out of trouble when Snape discovered the Marauder's Map)

"But then ... ...why hasn't he shown himself before now? Unless.... unless he was the one ... unless you switched ... without telling me?" (Chapter 17, on figuring out Peter and Sirius switched as Harry's Secret Keeper)

"Not at all up to your usual standard, Hermione. Only one out of three, I'm afraid. I have not been helping Sirius get into the castle and I certainly don't want Harry dead.... but I won't deny that I am a werewolf." (Chapter 17)

"You fool. Is a schoolboy grudge worth putting an innocent man back inside Azkaban?" (Chapter 19, to Snape)

"Not at all, Padfoot, old friend. And will you, in turn, forgive me for believing you were the spy?" (Chapter 19, to Sirius)

ORDER OF THE PHOENIX
"Personally, I think it better that Harry gets the facts .... not all the facts, Molly, but the general picture.... from us rather than a garbled version from others." (Chapter 5, on whether Harry should be know more about the Order of the Phoenix)

"I think Harry ought to be allowed a say in this. He's old enough to decide for himself." (Chapter 5, on the same as above)

"Molly, you're not the only person at this table who cares about Harry..... SIRIUS SIT DOWN!" (Chapter 5, proving he's not always the quiet mannered man we all know and love)

"And I'm not a very popular dinner guest with most of the community. It's an occupational hazard of being a werewolf." (Chapter 5)

"Did you like question ten, Moony?" asked Sirius as they emerged into the Entrance Hall.
"Loved it," said Lupin briskly. "Give five signs that identify the werewolf. Excellent question."
"D'you think you managed to get all the signs?" said James in tones of mock concern.
"Think I did," said Lupin seriously, as they joined the crowd thronging around the front doors eager to get out into the sunlit grounds. "One: he's sitting on my chair. Two: he's wearing my clothes. Three: his name is Remus Lupin." (Chapter 28)

"Hello Harry. Well we thought we might have a little chat with your aunt and uncle before letting them take you home." (Chapter 38)