Asma

“Severus Snape wasn't yours," said Harry. "Snape was Dumbledores, Dumbledores from the moment you started hunting down my mother...”
― J.K.Rowlings , Harry Potter and the Deathly Hallows

“You are determined to hate him [Snape], Harry,” said Lupin with a faint smile. “And I understand; with James as your father, with Sirius as your godfather, you have inherited an old prejudice. By all means tell Dumbledore what you have told Arthur and me, but do not expect him to share your view of the matter; do not even expect him to be surprised by what you tell him. It might have been on Dumbledore’s orders that Severus questioned Draco.”
― J.K. Rowling, Harry Potter and the Half-Blood Prince

“The mistake ninety-nine percent of humanity made, as far as Fats could see, were being ashamed of what they were, lying about it, trying to be somebody else. Honesty was Fats' currency, his weapon and defense. It frightened people when you were honest; it shocked them. Other people, Fats had discovered, were mired in embarrasment and pretense, terrified that their truths might leak out, but Fats was attracted by rawness, by everything that was ugly but honest, by the dirty things about which the likes of his father felt humiliated and disgusted. Fats thought a lot about messiahs and pariahs; about men labeled mad or criminal; noble misfits shunned by the sleepy masses.”
― J.K. Rowling, The Casual Vacancy

“Do you know what I think, Potter?' said Snape, very quietly. "I think that you are a liar and a cheat and that you deserve detention with me every Saturday until the end of term. What do you think, Potter?”
― J.K. Rowling, Harry Potter and the Half-Blood Prince