How we cite our quotes: All quotations are from Harry Potter and the Sorcerer's Stone.
Quote #4
HARRY: But I've never even played Quidditch. What if I make a fool of myself?
HERMIONE: You won't make a fool of yourself. It's in your blood.
RON: Whoa! Harry, you never told me your father was a Seeker too.
HARRY: I didn't know.
Just as Harry finds out about who he is during his first year at Hogwarts, he also finds out who is his parents are—and in the case of Quidditch, where his identity and his parents' intersect.
Quote #5
HARRY: Excuse me! C-could you tell me how to—
MRS. WEASLEY: How to get on the platform? Yes, not to worry, dear. It's Ron's first time to Hogwarts as well. Now, all you've got to do is walk straight at the wall between platforms 9 and 10. Best do it at a bit of a run if you're nervous.
This is a bit of foreshadowing, indicating how much of a family the Weasleys will become to Harry. But it also gives a glimpse of Ron's family, and more importantly, shows what a kind woman his mother is.
Quote #6
RON: Happy Christmas, Harry.
HARRY: Happy Christmas, Ron. What are you wearing?
RON: Oh, Mum made it for me. Looks like you've got one too!
HARRY: I've got presents?
RON: Yeah!
Harry's genuinely shocked that he actually has Christmas presents…which infers both that the Dursleys were an awful family to him, and that he's finding a newer, better family at Hogwarts.