In Chapter 24 of Harry Potter and the Deathly Hallows, when Harry makes his cataclysmic decision to go after the horcruxes, he begins to sound like Dumbledore.
He speaks simply, directly and with authority
He thanks people, retains information, and still acts in empathy and sympathy with Griphook and Ollivander.
He becomes quite …dare I say… pastoral in his demeanor….
Interesting….
Dumbledore made a Dumbledore out of Harry potter…