The story of the conquest for light. The history of architecture, and the struggle between conflicting functions. Take the wall, it was designed to support the house, it's essential that the wall should be solid! the other is the window to illuminate the house, yet at the same time, the window can influence the strength of the wall, even with these two opposing functions the wall still supports the house.
Glass give us the means of restoring the law of the sun. It also gives us the means by which we can find one of the essential conditions for life: sun and light.