"My name is Tobias Eaton," Tobias says. "I don't think you want to push me off this train." The effect of the name on the people in the car is immediate and bewildering: they lower their weapons. They exchange meaningful looks. "Eaton? Really?" Edward says, eyebrows raised. "I have to admit, I did not see that coming." He clears his throat. "Fine, you can come. But when we get to the city, you've got to come with us." Then he smiles a little. "We know someone who's been looking for you, Tobias Eaton."

Source: Interview: Veronica Roth on her book 'Insurgent' and feminism. Los Angeles Times Interview, latimesblogs.latimes.com. April 30, 2012.