In any case, there was only one tunnel, dark and lonely, mine, the tunnel in which I had spent my childhood, my youth, my whole life. And in one of those transparent lengths of the stone wall I had seen this girl and had gullibly believed that she was traveling another tunnel parallel to mine, when in reality she belonged to the broad world, to the world without confines of those who do not live in tunnels; and perhaps she had peeped into one of my strange windows out of curiosity and had caught a glimpse of my doomed loneliness, or her fancy had been intrigued by the mute language, the clue of my painting.And then, while I advanced always along my corridor, she lived her normal life outside, the exciting life of those people who live outside, that strange, absurd life in which there are dances and parties and gaiety and frivolity. And it happened at times that when I walked by one of my windows she was waiting for me, silent and longing (why was she waiting for me? why silent and longing?); but other times she did not get there on time, or she forgot about this poor creature hemmed in, and then I, with my face pressed against the glass wall, could see her in the distance, smiling or dancing carefree, or, what was worse, I could not see her at all and I imagined her in inaccessible or vile places. And then I felt my destiny a far lonelier one than I had imagined.
Ernesto Sabato, El túnel
existentialism, loneliness, melancholy