Miguel de Unamuno's "Tragic Sense of Life" is a philosophical treatise that grapples with the human desire for immortality in the face of inevitable death. Unamuno argues that the human condition is inherently tragic because our longing for eternal life is irreconcilable with reason. He explores this tragic tension through an examination of various philosophical, religious, and literary perspectives, ultimately concluding that true meaning lies not in finding definitive answers, but in embracing the perpetual uncertainty and passionate struggle that define our existence.