The concept of eternal return, as depicted by Milan Kundera in "The Unbearable Lightness of Being," suggests that life lacks permanence. If existence is fleeting and does not recur, then it becomes insubstantial, akin to a shadow that holds no significance. Whether one's experiences are joyful or tragic, they ultimately lack value in this context.

This perspective leads to a profound philosophical contemplation about the nature of life. It challenges the meaning we ascribe to our experiences, suggesting that their temporary nature renders them inconsequential, thereby questioning the weight of our actions and choices.