Kassandra walked over to her father.
- Pythagoras: This is incredible. The knowledge stored here is overwhelming. It will take me years to decipher it all.
- Kassandra: What about sealing Atlantis... Have you found a way to do it?
- Pythagoras: Oh... Yes, yes I think so.
- Kassandra: Well? What is it?
- Pythagoras: The staff, the staff is the key.
- Kassandra: All right. It's time.
Pythagoras considered for a moment, then decided against his original goal.
- Pythagoras: I can't. Not yet.
- Kassandra: We can't stay here, we don't have the time.
- Pythagoras: There is so much to learn. With this knowledge, we can turn the tide of fate.
- Kassandra: That is not your destiny. You said so yourself. You're losing sight of what's important.
- Kassandra: If the staff is the key to this place, I don't want to get locked in.
- Pythagoras: I can't hand it over yet. There's still so much to see.
- Kassandra: That wasn't the plan.
- Kassandra: Listen to yourself—you've gone mad. You need to accept some knowledge was not meant to be had.
- Pythagoras: Knowledge is power—the only power worth having.
- Kassandra: At what cost?
- Pythagoras: I will not be ordered around or lectured by you.
- Kassandra: It was your plan to seal this place, and I agreed to help.
- Pythagoras: That was before I realized what we could uncover about the First Civilization—the creation of humankind.
Pythagoras walked to the center while looking up in awe.
- Kassandra: We are sealing this place to keep the Cult from using it to enslave humanity. That is bigger than your quest for knowledge.
- Pythagoras: The Cult will be nothing but an insect to swat once the power is ours.
- Kassandra: It's too dangerous to leave this place open, and you know it.
- Pythagoras: You wouldn't understand.
- Kassandra: Your pride will cost us all in the end.
- Pythagoras: It's not about pride.
- Kassandra: What good is knowledge if you curse all of humanity in the process? It's what you wanted to avoid in the first place.
- Kassandra: Sometimes it's better if we find our own path. We are not ready for the power this place offers.
- Pythagoras: You're right. I cannot save humanity directly, but I can save it from itself.
- Kassandra: This is your burden now. Humanity's fate will be decided by the choices you make.
- Kassandra: I understand.
- Pythagoras: Kassandra.
- Pythagoras: Choose wisely.
- Kassandra: Give me the staff. You have to—for the sake of everyone.
- Pythagoras: The knowledge contained in here could fix everything for generations to come. I can't just walk away from that.
- Kassandra: What good is knowledge if there's no one around to use it?
- Pythagoras: Leave if you must, but I will not.
- Kassandra: I'm not going without the staff.
- Pythagoras: I may be old, but I'm not as weak as I appear.
- Kassandra: Give up the staff.
- Pythagoras: The knowledge is mine. Mine.
- Pythagoras: I will not let you have it.
- Kassandra: I don't have it! I want it destroyed!
- Pythagoras: Liar!
- Pythagoras: Pathetic! You were supposed to be better than this. Bigger than this.
- Kassandra: I will be whatever I want to be.
- Pythagoras: A misthios? A common thug? You are an embarrassment to yourself, and to me.
- Kassandra: Enough!
- Pythagoras: This is my chance to make things right.
- Kassandra: No. It isn't.
- Kassandra: It's over. Give me the staff.
- Pythagoras: You do not deserve the infinite knowledge of our creators.
- Kassandra: That's the point. Nobody does.
- Pythagoras: No!
Kassandra retrieved the Staff of Hermes Trismegistus and jumped over to an upright stone construct on a small dais nearest to the undersea window. Kassandra: Atlantis is too dangerous. I must seal it. The column flashed as Kassandra sealed the entrance to the lost city.
After they listened to Aletheia's messages, Pythagoras changed his mind about sealing the gateway to Atlantis, believing he could learn more about the Isu and human origins to eventually acquire their power. Kassandra either convinced him to relent or took the staff by force. Pythagoras passed away at the moment she acquired the staff. Using the staff, she successfully sealed the gateway to Atlantis.