It had been here, in this very room, that Dumbledore had told him that he was to confide the contents of their lessons to nobody but Ron and Hermione.
You do them a disservice by not confiding something this important to them.
He did not ask Harry why he had not confided in the Dursleys.
’Harry Potter knows that he can confide in me with complete confidence,’ I told them.
He died some time ago, but not before I had tracked him down and persuaded him to confide these recollections to me.
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.
Then why not confide in me, and I can —
Perhaps Dumbledore did not think it right to confide suspicions about his staff to sixteen-year-olds.
"I believe he had several reasons, though he confided none of them to Professor Dippet," said Dumbledore.
Hardly anyone knew of it at the time — I was one of the few in whom the then headmaster confided — but Voldemort first approached Professor Dippet and asked whether he could remain at Hogwarts as a teacher.
Chapter 18: Birthday Surprises The next day Harry confided in both Ron and Hermione the task that Dumbledore had set him, though separately, for Hermione still refused to remain in Ron’s presence longer than it took to give him a contemptuous look.
"You’d do better," said Hermione, when he confided this plan to Ron and her in the entrance hall, "to go straight to Slughorn’s of-fice and try and get that memory from him."
"Well, it is inadvisable to do so," said Dumbledore, "because to confide a part of your soul to something that can think and move for itself is obviously a very risky business.