“My subject is History of Magic,” he said in his dry, wheezy voice. “I deal with facts, Miss Granger, not myths and legends.” He cleared his throat with a small noise like chalk sipping and continued, “In September of that year, a subcommittee of Sardinian sorcerers—” He stuttered to a halt. Hermione’s hand was waving in the air again.
“Miss Grant?”
“Please, sir, don’t legends always have a basis in fact?”
Professor Binns was looking at her in such amazement, Harry was sure no student had ever interrupted him before, alive or dead.
“Well,” said Professor Binns slowly, “yes, one could argue that, I suppose.” He peered at Hermione as though he had never seen a student properly before. “However, the legend of which you speak is such a very sensational, even ludicrous tale—”
But the whole class was now hanging on Professor Binns’s every word. He looked dimly at them all, every face turned to his. Harry could tell he was completely thrown by such an unusual show of interest.
“Oh, very well,” he said slowly. “Let me see… the Chamber of Secrets…
“You all know, of course, that Hogwarts was founded over a thousand years ago—the precise date is uncertain—by the four greatest witches and wizards of the age. The four school Houses are named after them: Godric Gryffindor, Helga Hufflepuff, Rowena Ravenclaw, and Salazar Slytherin. They built this castle together, far from prying Muggle eyes, for it was an age when magic was feared by common people, and witches and wizards suffered much persecution.”
He paused, gazed blearily around the room, and continued.
“For a few years, the founders worked in harmony together, seeking out youngsters who showed signs of magic and bringing them to the castle to be educated. 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.”