I had looked at Edward Hopper before and wasn’t impressed then. I changed my view after looked at his works again recently suggested by my tutor.
Audio guides chips at the Whitney Museum of Modern Art are very informative and worth watching. They discussed in-depth the connection between his drawings and related paintings. http://whitney.org/WatchAndListen/AudioGuides?play_id=842 It is fascinating to see how Hopper developed his ideas through drawings. One thing I picked out from the chip is Hopper was a master of light. How true it is.
There was also a related article “How Edward Hopper Storyboarded ‘Nighthawks’ by Robin Cembalest posted 07/25/13. http://www.artnews.com/2013/07/25/how-edward-hopper-storyboarded-nighthawks/
Sun in an Empty Room (1963) was one of his late work. Sun light from the window casted strong shadows on the floor and walls of an empty room, devoid all decoration nor furnitures. The mood of the picture is calm and sober. Even half of the view outside the window, where the light source came from, was filled with total darkness. I do admire the subtle tonal values in the mixed of casted shadows and reflected light. http://www.edwardhopper.net/sun-in-an-empty-room.jsp