Sentence:  At this date , it seems probable that the name of Serge Prokofieff will appear in the archives of History , as an effective Traditionalist , who was fully aware of the lure and danger of experimentation , and used it as it served his purpose ; yet was never caught up in it - never a <WSD>slave</WSD> to its academic dialectics . 
Meaning of the word marked with <WSD> tags:  a person who is owned by someone