Who is John Galt?
Example:
Person 1: Why did you destroy that building?
Person 2: Because I can.
Person 1: What was your motive behind the attack?
Person 2: Who is John Galt?
Person 1: Why did you destroy that building?
Person 2: Because I can.
Person 1: What was your motive behind the attack?
Person 2: Who is John Galt?