Extract from Loos Architecture, 1910:
A building should please everyone, unlike a work of art, which does not have to please anyone. A work of art is a private matter for the artist, a building is not. A work of art is brought into the world without there being a need for it, a building meets a need. A work of art has no responsability to anyone, a building to everyone. The aim of a work of art is to make us feel uncomfortable, a building is there for our comfort. A work of art is revolutionary, a building conservative. A work of art is concerned with the future and directs us along new paths, a building is concerned with the present. We love anything that adds to our comfort, we hate anything that tries to pester us into abandoning our established and secure position. We love buildings and hate art.
So the building has nothing to do with art and architecture is not one of the arts? That is so.
We have to read between Loos lines and scroll the truth through his paradoxes.