Sentence:  His various <WSD>aesthetic</WSD> postulates remain as landmarks of a house divided against itself : Supra Expressionism , Neo Paganism , Neo Classicism , Neo Romanticism , Neo Jazz , Neo Ecclesiasticism , Neo Popularism , and most recently , Post Serialism - all competing with each other within one composer ! 
Meaning of the word marked with <WSD> tags:  relating to or dealing with the subject of aesthetics