Albus Severus, you were named after two headmasters of Hogwarts. One of them was a Slytherin and he was probably the bravest man I ever knew.”
-- Harry Potter (Act One, Scene Three paragraph 38)

Importance: Albus has just admitted that he is worried about being placed in the Slytherin house at Hogwarts. He mentions the house's reputation as being home of Dark wizards. Harry is trying to reassure his son but he may also have some deep-rooted objections to Slytherin.

You told me yourself, the words he said were 'Kill the spare.' The spare. My son, my beautiful son, was a spare.
-- Amos Diggory (Act One, Scene Six paragraph 11)

Importance: Amos has heard that Harry has a Time-Turner and he is trying to get Harry to go back in time to save Cedric. Harry knows that it is too dangerous to go back in time, but he does not tell Amos that, probably because he knows he will not understand. Instead, Harry denies that the Time-Turner...