Secrets and lies, that's how we grew up, and Albus ... he was a natural.
                    ~Aberforth Dumbledore Of Harry Potter~

Brains like that, you could be a Death Eater, son. Haven't I just proved my Patronus is a goat?
                     ~Aberforth Dumbledore Of Harry Potter~

If you wish to leave with your students we shall not stop you, but if any of you attempt to sabotage our resistance or take up arms against us within this castle, then Horace, we duel to kill.
                    ~ Minerva McGonagall Of Harry Potter~

I have been careless, and so have been thwarted by luck and chance,  those wreckers of all but the best laid plans
                       ~Lord Voldemort/Tom Riddle Of Harry Potter~