(..) any chance at all... that I might not be the guy in the prophecy? The Oracle references a half-blood of the eldest gods. You are the only living half-blood heir of Zeus, Hades or Poseidon. The prophecy could refer only to you. What if I destroy Olympus... by not being good enough to save it? (..)

(..) Whatever it is you think I did, I didn't do it. You've done nothing, Percy. Exactly. As you know, you are believed to be Poseidon's only heir. Yeah, so? So, it would seem that belief has been held in error. Hold on. You're saying Percy has a brother? (..)