Dumbledore: "What you are looking at are memories. In this case, pertaining to one individual. *holds up vial for Harry to see* This is perhaps the most important memory I have collected... I'd like you to see it."

After introduction and into the pensieve:
Mrs. Cole: *leads Dumbledore upstairs* "In all the years Tom's been here he's never once had a visitor."

Tom: "You're the doctor, aren't you?"
Dumbledore: "No."
Tom: "Who are you?"
Dumbledore: "Well I'm like you Tom, I'm different."
Tom: "Prove it."

*Dumbledore sets a wardrobe on fire*

While running through the fields:
Tom: "I can make things move without touching them, I can make bad things happen to people who are mean to me." *just as Dumbledore is leaving* "I can speak to snakes, too. They find me, whisper things."

In the darkness while the logo develops:
Harry: "Did you know, sir, then?"
Dumbledore: "Did I know I just met the most dangerous, Dark Wizard of all time? No."