《资治通鉴·唐纪·唐纪二十二》
卫州刺史太平人敬晖对僚属说： 我听说极坚固的城池，如果没有粮食也守不住，怎么能放弃收割而专门修缮城郭呢？ 
卫州刺史太平敬晖谓僚属曰： 吾闻金汤非粟不守，奈何舍收获而事城郭乎？
Wei Prefecture Governor of Taiping, Jing Hui, said to his colleagues: I heard that even the strongest city cannot be defended without food. How can we abandon the harvest and only repair the city walls?