This quote shows how if your a tiger then you live in a jungle and Pi fights just like tigers in the jungle. Since Richard Parker is the savage side of Pi then Pi is in a jungle and he must fight or run into death.
I have to remember this. I have a tendency to want to hold on to people forever. And when they don't want the same, I become hurt, and react by building walls. I am grateful for the time some people gave me. Especially when I lost my child.