"It is visibility itself that involves a non-invisibility."
"Sight is reciprocal, but hearing is sequential."
"Degas himself had little belief in the influence of sight on the work of art, and thought that the creative spirit of the artist allows him to overcome problems of this sort with ease."
"Degas painted his best things when he could no longer see."
"Degas’ failing eyes eventually forced him to grasp the essence of things."