"You were like a brother to me" was actually said by Paulie, not Silvio. This was said to Pussy right before Tony, Silvio, and Paulie executed him.

"How long did it take the guy to cum?" was also said by Paulie. He said it to Silvio when he was asking Sil about his first blowjob.

Q: "I'll tell you what's a gold mine: these Harry Potter books."

"Keep your body strong, your blood clean, and your mind sharp and mean." Henry Rollins