A man can see just material things inthe light by his eyes wide open and on which he focuses his mind. Inthe meantime, as the open eyes perceive as intensely inside theirsubconscious and although it is very well connected in that moment oflooking at the matter. If the man's eyes were closed (for example hesleeps) they can see his interior as it can see with his eyes closedonly. This represents a nebula or the creation of dreams as manypatterns and ideas. That´s why I chose it to express the play withlight and darkness.