LitCharts assigns a color and icon to each theme in Life of Pi, which you can use to track the themes throughout the work.
Survival
Religion and Faith
Storytelling
Boundaries
Summary
Analysis
Pi admits that his survival is hard to believe, but he explains how he maintained his dominance over Richard Parker. He was the tiger’s main source of food and water, and Richard Parker was used to this kind of treatment at the zoo. But the only proof of Pi’s story is that he lived to tell it.
Pi has already buttressed the validity of his story by explaining his childhood at the zoo and the different ways he knows to train animals, but now he admits that many people might doubt him about his surviving the Pacific with a tiger.