The Bell Jar
The bell jar is an inverted glass jar, generally used to display an object of scientific curiosity, contain a certain kind of gas, or maintain a vacuum. For Esther, the bell jar symbolizes madness. When gripped by insanity, she feels as if she is inside an airless jar that distorts her perspective on the world and prevents her from connecting with the people around her. At the end of the novel, the bell jar has lifted, but she can sense that it still hovers over her, waiting to drop at any moment.
The Fig Tree
Early in the novel, Esther reads a story about a Jewish man and a nun who meet under a fig tree. Their relationship is doomed, just as she feels her relationship with Buddy is doomed. Later, the tree becomes a symbol of the life choices that face Esther. She imagines that each fig represents a different life. She can only choose one fig, but because she wants all of them, she sits paralyzed with indecision, and the figs rot and fall to the ground.
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The Beating Heart
When Esther tries to kill herself, she finds that her body seems determined to live. Esther remarks that if it were up to her, she could kill herself in no time, but she must outwit the tricks and ruses of her body. The beating heart symbolizes this bodily desire for life. When she tries to drown herself, her heart beats, “I am I am I am.” It repeats the same phrase when Esther attends Joan’s funeral.