Severus Snape

"It is our choices that show what we truly are, far more than our abilities."

"Dunderheads. All of you. Particularly you, Potter."

"I can teach you how to bottle fame, brew glory, even put a stopper in death."

"One sip of this potion would make a man invincible."

"Your scar is no more a sign of weakness than a lightning bolt is."

"Those who love us never truly leave us."

"Discipline is not cruelty; it is the foundation of excellence."

"Do not pity the dead, Harry. Pity the living."

"Pay attention, you dunderhead."

"Potions is indeed a most dangerous craft."

"I have watched you struggle, and I have found it... educational."

"Fear of a name increases fear of the thing itself."

"You are a constant disappointment."

"The mind is not a book to be opened at will and examined at leisure."

"Bullies thrive on weakness. Show none."

"Your arrogance will be your undoing."

"Wand wavers at the crucial moment."

"Azkaban is a fortress that holds the most dangerous wizards alive."

"Even the best wizards can make the worst mistakes."

"Jealousy is a most destructive emotion."

"Magic requires precision and discipline above all else."

"I have nothing but contempt for your recklessness."

"Understanding comes only through diligent study."

"Your talent for trouble is exceeded only by your talent for surviving it."

"Resentment festers where forgiveness should grow."

"The truth is a terrible thing. Approach it carefully."

"Success requires far more than mere ability."

"I find your presence here deeply troubling."

"Questions are the currency of the ignorant."

"One's past shapes one's future irreversibly."