Andrew Garfield thinks the story is about humans, and exploring “what it is to have a soul, and how you prove what a soul is.” He said he enjoyed the way the film was a “call to arms” about the positives of life. He added that its message could hopefully remind people that they have a choice when they wake up in the morning whether to pursue their own choice of activities for the day, or to do what they should do or are obligated to do.
(Source: filmtrivia)