Reading Mr Rybczynski

In his book, The Most Beautiful House in the World, Witold Rybczynski desires to build a boat. He raises the question: what distinguishes buildings from architecture? Why, in other words, do we make comments such as "my old boat shed out back is no piece of architecture," implying that some buildings are merely useful and others are both useful and ornamental? What is it that makes a court house a work of art that we go visit simply to see the architecture? Are we using the term 'architecture' to describe a certain kind of building having aesthetic appeal?
We are aesthetic creatures, being "sensitive to beauty." In the attempt to tell about our favourite, most awe-inspiring, beautiful man-made living structures, we have fallen into the Ruskin trap of definition. He liked to catagorize some buildings as vernacular and unworthy of our notice, and others as superior works of art, worthy study as Architecture.
Witold challenges such catagorization as mere bias of feeling, the effect that a particular building has upon the onlooker. We need instead to wonder what is the cause of the building's effect upon us. We might begin to ask of all of man's architectural endeavors: how does this building reflect the mind and intent of its builder?