The first half of the 1960s ...

The first half of the 1960s was the apogee of what might be termed the Age of Cool - as defined by that quality of being simultaneously with-it and disengaged, in control but nonchalant, knowing but ironically self-aware, and above all inscrutably undemonstrative.
 Martin Filler

Quotes from the same author

By 1970, the first stirrings of the revolt against Modernist orthodoxy in architecture had been felt, although it would be several years more until Postmodernism was widely accepted and made classical motifs permissible in high-style building design for the first time in decades.
 Martin Filler
Avant-garde architects have never been able to depend on the support of the establishment, since the customary patrons of this most conservative and slowly moving art form have historically been resistant to innovation and experiment.
 Martin Filler
When Oscar Niemeyer died on December 5, 2012, ten days before his 105th birthday, he was universally regarded as the very last of the twentieth century's major architectural masters, an astonishing survivor whose most famous accomplishment, Brasilia, was the climactic episode of utopian High Modern urbanism.
 Martin Filler
There is no sadder tale in the annals of architecture than the virtual disappearance of the defining architectural form of the Modern Movement - publicly sponsored housing.
 Martin Filler
All architecture, classical or not, must have some sense of order, and order is much harder to achieve without the straight lines and right angles that have dominated the building art from time immemorial.
 Martin Filler