“Imperfect understanding is often more dangerous than ignorance.”
“Bangs and smoke were more often the marks of ineptitude than expertise.”
“Indifference and neglect often do much more damage than outright dislike.”
“The difficult thing, the glorious thing, was to be who you really were, even if that person was cruel or dangerous, particularly if cruel and dangerous. There was courage in not distinguishing the animal you happened to be. On the other hand, you had to avoid pretending to be more of an animal than you were: take that path, start exaggerating or faking and you became just another Cubby, just as much of a liar, a hypocrite”
“Ah, Harry, how often this happens, even between the best of friends! Each of us believes that what he has to say is much more important than anything the other might have to contribute!”
“I cared more about your happiness than your knowing the truth, more for your peace of mind than my plan, more for your life than the lives that might be lost if the plan failed. In other words I acted exactly as Voldemort expects we fools who love to act.”
“There are much more terrible things than physical injury.”