The quote emphasizes the unique perspective of children, who live in the present without the burden of past experiences. Their innocence is illustrated through their smiles, which capture a sense of wonder and mystery untouched by adult concerns. This lack of history allows them to engage with the world in a pure and joyous manner, revealing the fundamental beauty of childhood.

In Milan Kundera's "The Book of Laughter and Forgetting," this idea resonates deeply, as it explores themes of memory, identity, and the passage of time. The magic of childhood innocence is contrasted with the complexities that often accompany adulthood, suggesting that the simplicity of a child's smile carries profound significance. It invites readers to reflect on the nature of happiness and the importance of living in the moment.