Good Slytherin Quotes & Sayings

Hello' said a vague and dreamy voice from behind them. Harry looked up: Luna Lovegood had drifted over from the Ravenclaw table. Many people were staring at her and few people openly laughing and pointing; she had managed to procure a hat shaped like a life-size lion's head, which was perched precariously on her head.
'I'm supporting Gryffindor' said Luna, pointing unnecessarily at her hat. Look what it does ... '
She reached up and tapped the hat with her wand. It opened its mouth wide and gave an extremely realistic roar that made everyone in the vicinity jump.
'It's good, isn't it?' said Luna happily. 'I wanted to have it chewing up a serpent to represent Slytherin, you know, but there wasn't time. Anyway ... good luck, Ronald! — J.K. Rowling

Don't let Ron see what's on those Slytherin's badges," she whispered urgently.
Harry looked questioningly at her, but she shook her head warningly; Ron had just ambled over to them, looking lost and desparate.
"Good luck, Ron," said Hermione, standing on tiptoe and kissing him on the cheek. "And you, Harry
"
Ron seemed to come to himself slightly as they walked back across the Great Hall. He touched the spot on his face where Hermione had kissed him, looking puzzled, as though he was not quite sure what had just happened. — J.K. Rowling