"Quality is a necessary constituent of good architecture. It has to do with the choice of materials, techniques and, through the manner in which things are juxtaposed and put together, the expression of the spirit of a work. Richness is not a factor; it is as possible, as easy, to achieve good quality with inexpensive means as to achieve it with an overabundance of riches. There is appropriate quality which is perhaps the same as a sense of propriety. To have this sense and the ability to practice it, with clarity, is the factor that particularly distinguishes the work."