What is the theme in Being There by Jerzy Kosinski?

Innocence lost and regained is a prevalent theme in the book. Chance represents a truly innocent character. He has no notion of what the world is like outside of the garden he tended. Chance's first steps toward a loss of innocence are symbolized by his last visit to the garden. An old, untouched key is what he needs to unlock the gate and leave his innocence behind. As a result of leaving the garden, he experiences his first accident, meets the Rands, and begins his journey toward fame.