The theme speaks of of the resilience and tenacity of life regardless of what form it takes: a human, a turtle, or an ant.
Explanation:
The turtle seems to survive despite the odds. Turtles are seemingly weak and slow, however, in the plot, we see a turtle focused on what it wants and giving it all it's got. In paragraph 2 of chapter 3, the turtle exemplifies focus as it crawled straight towards its locus point. The narrator also gives an exciting and suspense-filled account of how the turtle survives being run over by several cars.
All the above allude to the resilient nature of the turtle which typifies life.
