In "The Last Unicorn" by Peter S. Beagle, the concept of beauty is intricately tied to the nature of life and mortality. The assertion that anything capable of dying possesses a unique beauty implies that life's transience adds depth and value to existence. Unlike the eternal unicorn, which embodies an unattainable ideal, the fleeting moments of life enhance our appreciation for beauty.

The contrast between the mortal and the immortal highlights that true beauty is often found in the ephemeral, making it precious and profound. This perspective encourages a deeper understanding of what it means to appreciate the world around us, suggesting that it is the inevitability of loss that makes beauty truly resonate with us.