"Be who you are and say what you feel, because those who mind don't matter, and those who matter don't mind."
— Dr. Seuss

"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe."
— Albert Einstein

"A room without books is like a body without a soul."
— Marcus Tullius Cicero

"So many books, so little time."
— Frank Zappa

"Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover."
— Mark Twain

"Here's to the crazy ones. The misfits. The rebels. The troublemakers. The round pegs in the square hole. The ones who see things differently. They're not fond of rules. And they have no respect for the status quo. You can quote them, disagree with them, glorify or vilify them. About the only thing you can't do is ignore them. Because they change things. They push the human race forward. And while some may see them as the crazy ones, we see genius. Because the people who are crazy enough to think they can change the world, are the ones who do."
— Apple Computer Inc.

"The person, be it gentleman or lady, who has not pleasure in a good novel, must be intolerably stupid."
— Jane Austen (Northanger Abbey)

"Stupid men are the only ones worth knowing after all."
— Jane Austen

"Damn me to hell or take me to heaven, but for Gods sake, do it now...."
— Nora Roberts (The Stanislaski Brothers: Mikhail and Alex)

"Do you remember me telling you we are practicing non-verbal spells, Potter?"
"Yes," said Harry stiffly.
"Yes, sir."
"There's no need to call me "sir" Professor."
The words had escaped him before he knew what he was saying."
— J.K. Rowling (Harry Potter and the Half-Blood Prince)

"Oh well... I'd just been thinking, if you had died, you'd have been welcome to share my toilet."
— J.K. Rowling (Harry Potter and the Chamber of Secrets)

"Mr. Moony presents his compliments to Professor Snape, and begs him to keep his abnormally large nose out of other people's business.

Mr. Prongs agrees with Mr. Moony, and would like to add that Professor Snape is an ugly git.

Mr. Padfoot would like to register his astonishment that an idiot like that ever became a professor.

Mr. Wormtail bids Professor Snape good day, and advises him to wash his hair, the slimeball."
— J.K. Rowling (Harry Potter and the Prisoner of Azkaban)

"He can run faster than Severus Snape confronted with shampoo."
— J.K. Rowling (Harry Potter and the Deathly Hallows)

"Dumbledore watched her fly away, and as her silvery glow faded he turned back to Snape, and his eyes were full of tears.

'After all this time?'

'Always,' said Snape."
— J.K. Rowling (Harry Potter and the Deathly Hallows)

"Not my Daughter, you Bitch!"
— J.K. Rowling (Harry Potter and the Deathly Hallows)

"Give her hell from us, Peeves."
— J.K. Rowling (Harry Potter and the Order of the Phoenix)

"Look...at...me..." he whispered. The green eyes found the black, but after a second, something in the depths of the dark pair seemed to vanish, leaving them fixed, blank, and empty. The hand holding Harry thudded to the floor, and Snape moved no more."
— J.K. Rowling (Harry Potter and the Deathly Hallows)

"The mind is a complex and many-layered thing, Potter...or at least, most minds are..."
— J.K. Rowling

"'Hide them all, then. Keep her – them – safe. Please.'
'And what will you give me in return, Severus?'
'In – in return? Anything.'"
— J.K. Rowling (Harry Potter and the Deathly Hallows)

"'I wish I were dead...'
'Now what good would that do to anyone?'"
— J.K. Rowling (Harry Potter and the Deathly Hallows)

"Yes, it is easy to see that nearly six years of magical education have not been wasted on you, Potter. 'Ghosts are transparent.'"
— J.K. Rowling

"You will learn to bewitch the mind and insare the senses."
— J.K. Rowling (Harry Potter and the Sorcerer's Stone)

"'Would you like me to do it now?' asked Snape, his voice heavy with irony. 'Or would you like a few moments to compose an epitaph?'"
— J.K. Rowling (Harry Potter and the Deathly Hallows)

""What is the difference, Potter, between monkshood and wolfsbane?"

At this, Hermione stood up, her hand stretching towards the dungeon ceiling.

"I don't know," said Harry quietly. "I think Hermione does, though, why don't you try asking her?"

A few people laughed; Harry caught sight of Seamus's eye and Seamus winked. Snape, however, was not pleased.

"Sit down," he snapped at Hermione. "For your information, Potter, asphodel and wormwood make a sleeping potion so powerful it is known as the Draught of Living Death. A bezoar is a stone taken from the stomach of a goat and it will save you from most poisons. As for monkshood and wolfsbane, they are the same plant, which also goes by the name of aconite. Well? Why aren't you all copying that down?"

There was a sudden rummaging for quills and parchment. Over the noise, Snape said, "And a point will be taken from Gryffindor house for your cheek, Potter."
— J.K. Rowling

"Snape raised his wand and pointed it directly at Dumbledore.
"Avada Kedavra!"
— J.K. Rowling (Harry Potter and the Half-Blood Prince)

"Severus Snape: "I never meant to call you Mudblood, it just-"
Lily: "Slipped out? It’s too late. I’ve made excuses for you for years. None of my friends can understand why I even talk to you. You and your precious little Death Eater friends ... You’ve chosen your way, I’ve chosen mine."
"
— J.K. Rowling (Harry Potter and the Deathly Hallows)

"Obviously fame isn't everything. Is it, Mr. Potter? --Severus Snape"
— J.K. Rowling (Harry Potter and the Sorcerer's Stone)

"'Kill me then,' panted Harry, who felt no fear at all, but only rage and contempt. 'Kill me like you killed him, you coward-'

'DON'T-' screamed Snape, and his face was suddenly demented, inhuman, as though he was in as much pain as the yelping, howling dog stuck in the house behind them- 'CALL ME A COWARD!'"
— J.K. Rowling (Harry Potter and the Half-Blood Prince)

"Our Headmaster is taking a short break," said Professor McGonagall, pointing at the Snape-shaped hole in the window."
— J.K. Rowling (Harry Potter and the Deathly Hallows)

"The mind is not a book, to be opened at will and examined at leisure. Thoughts are not etched on the inside of skulls, to be perused by an invader. The mind is a complex and many-layered thing."
— J.K. Rowling (Harry Potter and the Order of the Phoenix)

"The – the prophecy ... the prediction ... Trelawney... He thinks it means Lily Evans!"
"The prophecy did not refer to a woman. It spoke of a boy born at the end of July –"
"You know what I mean! He thinks it means her son, he is going to hunt her down – kill them all –"
— J.K. Rowling (Harry Potter and the Deathly Hallows)