Cosmetics: Physical decorative enhancements applied to a surface. The effect produced by the application or use of cosmetics arises not from meaning inherent in the the cosmetics or the surface, but from the relationship between the two.
Lʼespirit Nouveau: Literally translated, l'espirit nouveau means the new spirit. Le Corbusierʼs new spirit was the move from the spirit of the avant-garde to age of consumption, or the machine age. The change in spirit can also be seen as the idea that the spirit or meaning of a thing can change depending on it's classification, which can be provided by physical space or by crossing a physical barrier, as exemplified by Duchampʼs Fountain, which transformed from everyday object to art by crossing the threshold of the museum.
Envelope: The physical barrier of a building, which can also be a ideological barrier when one considers what is allowed to permeate the barrier--who and what is kept outside of the barrier, who and what is kept inside of the barrier.
“Ornaments attach as discreet entities to the body like jewelry, reinforcing the structure and integrity of the body as such. Cosmetics are indiscreet, with no relation to the body other than to take it for granted. Cosmetics are erotic camouflage; they relate always and only to the skin, to particular regions of the skin. Deeply, intricately material, cosmetics nevertheless exceed materiality to become modern alchemicals as they trans-substantiate skin into image, desirous or disgusting. Where ornaments retain their identity as entities, cosmetics work as fields, as blush or shadow or highlight, as aura or air.” (Kipnis, The Cunning of Cosmetic)
"Viewing a landscape through a a window implies a separation. A window, any window, breaks the connection between being in a landscape and seeing it. Landscape becomes visual, and we depend on memory to know it as a tangible experience...Le Corbusier's window corresponds, I would argue, to the space of the camera...The point of view of photography is that of the camera, a mechanical eye. The painterly convention of perspective centers everything on the eye of the beholder and calls this appearance 'reality.' The camera--and more particularly the movie camera--implies that this is no center." (Colomina, LʼEsprit Nouveau: Architecture and Publicite)
"The building envelope forms the border, the frontier, the edge, the enclosure and the joint: it is loaded with political content." (Zaera Polo, The Politics of the Envelope)
The envelope of the building can contain many layers of meaning within the relationship between inside and outside. What is cosmetically applied to the surface of the outside creates a new relationship between the structure and what is beyond the barrier of the structure as it changes the surface. Punctures in the envelope, which allow transpiration between the inside and the outside, alter the political structure of the envelope by permitting physical and ideological dispersal beyond the barrier.