“It is my belief... that the truth is generally preferable to lies.”

“Only the difference between truth and lies, courage and cowardice.”

“The truth is always easier than a lie or an evasion - easier to deal with and easier to live with.”

“Finally, the truth. Lying with his face pressed into the dusty carpet of the office where he had once thought he was learning the secrets of victory, Harry understood at last that he was not supposed to survive.”

“The Potter books in general are a prolonged argument for tolerance, a prolonged plea for an end to bigotry. And I think it's one of the reasons that some people don't like the books, but I think that's it's a very healthy message to pass on to younger people that you should question authority and you should not assume that the establishment or the press tells you all of the truth.”

“He has never wanted to occupy the throne himself; he prefers the back seat - more room to spread out, you see.”

“Yeah, well, food's one of the five exceptions to Gamp's Law of Elemental Transfigurations," said Ron, to general astonishment.”