Sentence:  The spirit that roots Professor Wu, that endows him with his quiet serenity and his recent influence, is the inverse of the spirit that has been celebrated, lionized, and rewarded in the <WSD>hermetic</WSD>, self -perpetuating culture of the architectural world for most of the last seventy-five years. 
Meaning of the word marked with <WSD> tags:  Isolated, away from outside influence.