1. “For instance, Slytherin took only pure-blood wizards of great cunning, just like him.” – Sorting Hat

2. “He was wearing Professor Quirrell’s turban, which kept talking to him, telling him he must transfer to Slytherin at once because it was his destiny.” – J.K. Rowling

3. “But then, disagreements sprang up between them. A rift began to grow between Slytherin and the others. Slytherin wished to be more selective about the students admitted to Hogwarts. He believed that magical learning should be kept within all-magic families. He disliked taking students of Muggle parentage, believing them to be untrustworthy. After a while, there was a serious argument on the subject between Slytherin and Gryffindor, and Slytherin left the school. Professor Binns paused again, pursing his lips, looking like a wrinkled old tortoise.” – J.K. Rowling

4. “Is it true? My daughter—pure-blooded descendant of Salazar Slytherin—hankering after a filthy, dirt-veined Muggle?” – J. K. Rowling

5. “And my name’s Malfoy, Draco Malfoy.” – Draco Malfoy

6. “Why, I was there and so can tell the whole sad, sorry tale, said Slytherin. ‘We’ll teach just those whose ancestry is purest.'” – Sorting Hat

7. “And I gave Malfoy a black eye, and Neville tried to take on Crabbe and Goyle single-handed! He’s still out cold, but Madam Pomfrey says he’ll be all right—talk about showing Slytherin!” – J.K. Rowling

8. “Bold Gryffindor, from wild moor. Fair Ravenclaw, from glen. Sweet Hufflepuff, from valley broad. Shrewd Slytherin, from fen.” – Sorting Hat

9. “Being able to talk to snakes was what Salazar Slytherin was famous for. That’s why the symbol of Slytherin house is a serpent.” – Hermione Granger

10. “Slytherin, according to the legend, sealed the Chamber of Secrets. The heir alone would be able to unseal the Chamber of Secrets, unleash the horror within, and use it to purge the school of all who were unworthy to study magic.” – Professor Binns