Lao-Tse said that “architecture is not four walls and a roof; it is also, and above all, the air that remains within, the space that these enclose”. That is why architecture and
light, or light and architecture are concepts that were interdependent throughout history, to the point that one of Bruno Zevi’s most important essays is called: “light as an architectural
form”. 
www.unescocan.org/starlight/pdf/proceedings/CesarPortela.pdf