Liu guangdi put forward his westernist idea clearly : " taking the strong points while confining the calamity " 摘要刘光第明确提出了“取其长而制其害” (或称“收其利而制其害” )的西学思想。
Liu ' s idea broke the debate of " object " and " application " in westernization movement , and became his ideological basis in the reform of qing dynasty 刘光第的西学思想突破了洋务派的“体” “用”之争,是他参与维新变法的重要思想基础。