Doc Ostrow: Morbius was too close to the problem. The Krell had completed their project. Big machine. No instrumentalities. True creation.
Commander John J. Adams: Come on, Doc, let's have it.
Doc Ostrow: But the Krell forgot one thing.
Commander John J. Adams: Yes, what?
Doc Ostrow: Monsters, John. Monsters from the Id.
Commander John J. Adams: The Id? What's that? Talk, Doc!
[Doc slumps and dies]
Commander John J. Adams: Doc?
Commander John J. Adams: [sadly] Oh, Doc. Doc.