What is the 'sadness' that neruda talks of?

Answer 1

the poet feels that man has single mindedly engage himself in the persuit of material advancement amd thus he has feel his life with a void . the poet refers to the sadness of not understanding himself and of being threatend himself with death.

Answer 2

In Pablo Neruda's works, "sadness" often refers to a deep sense of melancholy or emotional heaviness that comes from experiences of loss, longing, or the impermanence of life. It can represent a profound sorrow or a poignant reflection on the complexities of human emotions.