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 got his prayer rug and came to cherish it. He liked to pray on it in the back yard, surrounded by birds, and his family would watch him curiously. Soon afterward Pi was baptized as a Christian with his parents in attendance.
Pi’s parents relent to his religious devotion, assuming it is just a phase and he will get “normal” interests soon. His childhood will soon be anything but normal though.