An invisible thread links me to the unknown owner of the lamp. It’s not the mutual circumstance of our both being awake; in this there can be no reciprocity, for my window is dark, so that he cannot see me. It’s something else, something all my own that’s related to my feeling of isolation, that participates in the night and in the silence, and that chooses the lamp as an anchor because it’s the only anchor there is.

— Bernardo Soares in Fernando Pessoa's, The Book of Disquiet (via)