lightness
"Lightness is a philosophical concept most closely associated with continental philosophy and existentialism, which is used in ontology. The term lightness varies in usage but is differentiated from the physical weight. "
invisible cities
"Arriving at each new city, the traveler finds again a past of his that he did not know he had; the foreignness of what you no longer are or no longer possess lies in wait for you in foreign, unpossessed places."
invisible & Absent
"Those who've left us aren't absent, they're invisible, they keep their eyes full of glory fixed ours full of tears." - Saint Augustine.
invisible & essential
"And now here is my secret, a very simple secret: it is only with the heart that one can see rightly; what is essential is invisible to the eye." The Little Prince, Antoine de Saint-Exupery.
angels
""Saint Augustine (Augustine of Hippo) is cited as an authority on the topic of angels. In the Nicene creed we profess faith in God, the Father almighty, maker of heaven and earth, of all things visible and invisible."
Memoirs of the blind
"Jacques Derrida explores issues of vision, blindness, self-representation, and their relation to drawing, while offering detailed readings of an extraordinary collection of images. Selected by Derrida from the prints and drawings department of the Louvre, the works depict blindness - fictional, historical, and biblical."
Blindness and drawing
"For Derrida, drawing itself is blind; as an act rooted in memory and anticipation, drawing necessarily replaces one kind of seeing (direct) with another (mediated)."
invisible lines
"The very lines that compose any drawing are themselves never fully visible to the viewer since they exist only in a tenuous state of multiple identities: as marks on a page, as indicators of a contour. Lacking a "pure" identity, the lines of a drawing summon the supplement of the word, of verbal discourse, and, in doing so, obscure the visual experience. Consequently, Derrida demonstrates, the very act of depicting a blind person undertakes multiple enactments and statements of blindness and sight."