http://www.nytimes.com/2012/09/30/magazine/rian-johnson-builds-a-better-time-machine.html?_r=0
Rian Johnson Builds a Better Time Machine

By ADAM STERNBERGH
Published: September 26, 2012

“Looper” is a film about fate, regret, decisions, revenge and the old maxim
that the child is the father of the man, but mostly it’s about time travel,

...

Another touchstone: “Four Quartets,” by T. S. Eliot. Johnson conceived of
the film in four acts, each related to an Eliot quote. (He reveals each of
these influences somewhat painfully, it should be noted, and accompanied by
a string of self-conscious caveats about sounding horribly pretentious.)