Laurence Provost

“Hang on . . .” Harry muttered to Ron. “There’s an empty chair at the staff table. . . . Where’s Snape?”
"Maybe he's ill!" said Ron hopefully.
“Maybe he’s left,” said Harry, “because he missed out on the Defense Against the Dark Arts job again!”
“Or he might have been sacked!” said Ron enthusiastically. “I mean, everyone hates him —”
“Or maybe,” said a very cold voice right behind them, “he’s waiting to hear why you two didn’t arrive on the school train.”
Harry spun around. There, his black robes rippling in a cold breeze, stood Severus Snape.”
― J.K. Rowling, Harry Potter and the Chamber of Secrets

“I have spied for you and lied for you, put myself in mortal danger for you. Everything was supposed to be to keep Lily Potter’s son safe. Now you tell me you have been raising him like a pig for slaughter —”
― J.K. Rowling, Harry Potter and the Deathly Hallows

“And what will you give me in return, Severus?’
‘In – in return?’ Snape gaped at Dumbledore, and Harry expected him to protest, but after a long moment he said, ‘Anything...”
― J.K. Rowling, Harry Potter and the Deathly Hallows

“Thought we were supposed to be friends? Best friends?”
“We are, Sev.”
― J.K. Rowling, Harry Potter and the Deathly Hallows