Harry Potter and the Half-Blood Prince

“Ah, Harry, how often this happens, even between the best of friends! Each of us believes that what he has to say is much more important than anything the other might have to contribute!”

“I don’t think what you’ve got to say is unimportant, sir,” said Harry stiffly.

“Well, you are quite right, because it is not,” said Dumbledore briskly. “I have two more memories to show you this evening, both obtained with enormous difficulty, and the second of them is, I think, the most important I have collected.”

Harry did not say anything to this; he still felt angry at the reception his confidences had received, but could not see what was to be gained by arguing further.

“So,” said Dumbledore, in a ringing voice, “we meet this evening to continue the tale of Tom Riddle, whom we left last lesson poised on the threshold of his years at Hogwarts. You will remember how excited he was to hear that he was a wizard, that he refused my company on a trip to Diagon Alley, and that I, in turn, warned him against continued thievery when he arrived at school.

“Well, the start of the school year arrived and with it came Tom Riddle, a quiet boy in his secondhand robes, who lined up with the other first years to be sorted. He was placed in Slytherin House almost the moment that the Sorting Hat touched his head,” continued Dumbledore, waving his blackened hand toward the shelf over his head where the Sorting Hat sat, ancient and unmoving. “How soon Riddle learned that the famous founder of the House could talk to snakes, I do not know—perhaps that very evening. The knowledge can only have excited him and increased his sense of self-importance.

“However, if he was frightening or impressing fellow Slytherins with displays of Parseltongue in their common room, no hint of it reached the staff. He showed no sign of outward arrogance or aggression at all. As an unusually talented and very good-looking orphan, he naturally drew attention and sympathy from the staff almost from the moment of his arrival. He seemed polite, quiet, and thirsty for knowledge. Nearly all were most favorably impressed by him.”

“Didn’t you tell them, sir, what he’d been like when you met him at the orphanage?” asked Harry.

“No, I did not. Though he had shown no hint of remorse, it was possible that he felt sorry for how he had behaved before and was resolved to turn over a fresh leaf. I chose to give him that chance.”

Dumbledore paused and looked inquiringly at Harry, who had opened his mouth to speak. Here, again, was Dumbledore’s tendency to trust people in spite of overwhelming evidence that they did not deserve it! But then Harry remembered something…

“But you didn’t really trust him, sir, did you? He told me… the Riddle who came out of that diary said, ‘Dumbledore never seemed to like me as much as the other teachers did.’”

“Let us say that I did not take it for granted that he was trustworthy,” said Dumbledore. “I had, as I have already indicated, resolved to keep a close eye upon him, and so I did. I cannot pretend that I gleaned a great deal from my observations at first. He was very guarded with me; he felt, I am sure, that in the thrill of discovering his true identity he had told me a little too much. He was careful never to reveal as much again, but he could not take back what he had let slip in his excitement, nor what Mrs. Cole had confided in me. However, he had the sense never to try and charm me as he charmed so many of my colleagues.

“As he moved up the school, he gathered about him a group of dedicated friends; I call them that, for want of a better term, although as I have already indicated, Riddle undoubtedly felt no affection for any of them. This group had a kind of dark glamour within the castle. They were a motley collection; a mixture of the weak seeking protection, the ambitious seeking some shared glory, and the thuggish gravitating toward a leader who could show them more refined forms of cruelty. In other words, they were the forerunners of the Death Eaters, and indeed some of them became the first Death Eaters after leaving Hogwarts.

“Rigidly controlled by Riddle, they were never detected in open wrongdoing, although their seven years at Hogwarts were marked by a number of nasty incidents to which they were never satisfactorily linked, the most serious of which was, of course, the opening of the Chamber of Secrets, which resulted in the death of a girl. As you know, Hagrid was wrongly accused of that crime.

“I have not been able to find many memories of Riddle at Hogwarts,” said Dumbledore, placing his withered hand on the Pensieve. “Few who knew him then are prepared to talk about him; they are too terrified. What I know, I found out after he had left Hogwarts, after much painstaking effort, after tracing those few who could be tricked into speaking, after searching old records and questioning Muggle and wizard witnesses alike.