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
It rains all night and Pi stays on the raft, cold and wet and unable to sleep. He begins coming up with plans to kill Richard Parker. He considers pushing him off the lifeboat or attacking him, but rejects these as suicidal. He finally decides to wage a “war of attrition” and wait for the tiger to run out of food and water. Pi just needs to stay alive for this plan to work.
Pi is once again hoping against reason that he can survive, despite his earlier acceptance of death. His final plan will seem foolish in the light of day, though.