[to Helen] Your professor is right. At the precipice we change.
Regina Jackson: Why have you come to our planet?
Klaatu: Your planet?
This body will take some getting used to.
If the Earth dies, you die. If you die, the Earth survives.
Polygraph Operator: I'm going to ask you a series of control questions. Are you currently in a seated position?
Polygraph Operator: Are you human?
Klaatu: My body is.
Polygraph Operator: Do you feel pain?
Klaatu: My Body does.
Polygraph Operator: Are you aware of an impending attack on the planet earth?
Klaatu: You should let me go.