I have zero interest in architecture but was lent this book by B B Pfeiffer after the subject of Fallingwater came up in conversation (as did the film My Architect).
After finishing this 200 page show-and-tell of 25 of Frank Lloyd Wright's significant works I still have no interest in architecture but did find that his works were fascinating. He espoused principles of design which seem to me quite logical yet were considered innovative for the time: fit in with the surroundings, make cheap materials look good, take advantage of modern materials and techniques, design for the times, design for people's needs to produce a blending of form and function. And his buildings generally look better to my eye than, say, Louis Kahn's.
Interesting also that he considered himself a "residential architect" first and commercial architect second. In those rare instances when I do think about what makes for great architecture it's always the public buildings that come to mind, not the private homes - the Guggenheim Museums, not the Fallingwaters. Yet Wright saw architecture as a means of serving society starting with the most basic unit - the home - and wore this appelation as a badge of honour.