Tom Riddle Books

“Riddle said I'm like him. Strange likenesses, he said...."
"Did he now?" said Dumbledore, looking thoughtfully at Harry from under his thick silver eyebrows. "And what do you think, Harry?"
"I don't think I'm like him!" said Harry, more loudly than he'd intended. "I mean, I'm- I'm in Gryffindor, I'm..."
But he fell silent, a lurking doubt resurfacing in his mind.
"Professor," he started again after a moment. "The Sorting Hat told me I'd- I'd have done well in Slytherin. Everyone thought I was Slytherin's heir for a while... because I can speak Parseltongue...."
"You can speak Parseltongue, Harry," said Dumbledore calmly, "because Lord Voldemort- who is the last remaining ancestor of Salazar Slytherin- can speak Parseltongue. Unless I'm much mistaken, he transferred some of his own powers to you the night he gave you that scar. Not something he intended to do, I'm sure..."
"Voldemort put a bit of himself in me?" Harry said, thunderstruck.
"It certainly seems so."
"So I should be in Slytherin," Harry said, looking desperately into Dumbledore's face. "The Sorting Hat could see Slytherin's power in me, and it-"
"Put you in Gryffindor," said Dumbledore calmly. "Listen to me, Harry. You happen to have many qualities Salazar Slytherin prized in his hand-picked students. His own very rare gift, Parseltongue- resourcefulness- determination- a certain disregard for rules," he added his mustache quivering again. "Yet the Sorting Hat placed you in Gryffindor. You know why that was. Think."
"It only put me in Gryffindor," said Harry in a defeated voice, "because I asked not to go in Slytherin...."
"Exactly," said Dumbledore, beaming once more. "Which makes you very different from Tom Riddle. It is our choices, Harry, that show what we truly are, far more than our abilities.”
― J.K. Rowling, Harry Potter and the Chamber of Secrets