The most powerful tools of revolution through intention are humility and consciousness.

Without haters, you can't see the level of your progress, that shows you that haters are necessary evil.

Misguided good men are more dangerous than honest bad men. It is because they are seen as good that, in and by good conscience, the mob will always, stubbornly back them without question.

I am not scoffing at goodness, which is far more difficult to explain than evil, and just as complicated. But sometimes it's hard to put up with.

It was important, Dumbledore said, to fight, and fight again, and keep fighting, for only then could evil be kept at bay, though never quite eradicated. . . .

Stupidity is the same as evil if you judge by the results.