劉師培 完全之人 完全之平等 革命思想 無政府主義 民約精義 盧梭在中國 權威危機 保種 保教 保國 Liu Shipei Complete person Wanquanzhiren Complete equality Wanquanzhipingdeng Revolutionary thought Anarchism The essence of social contract Minyue jingi Rousseau in China Crisis of authority Protecting the race Baozhung Protecting the teachings Baojiao Protecting the nation Baoguo