镜子主要是用于照自身容貌,反省自身行为的。唐太宗李世民说过:“以铜为镜,可以正衣冠;以史为镜,可以知兴替;以人为镜,可以知得失。”魏征死,唐太宗悲痛地说:“朕失一镜。”《墨子·非攻》也说过:“君子不镜于水而镜于人,镜于水见面之容,镜于人则知吉于凶。”把人言当作镜子,知其批评或反对 The mirror is mainly used to look at their own appearance, reflect on their own behavior. Emperor Taizong Li Shimin said: “With copper as a mirror, you can wear a dress; history is a mirror, you can know the others; people are the mirror, you can know the gains and losses.” “Wei Zheng died, Emperor Taizong sadly said:” A mirror. “” Mozi non-attack “also said: ” gentleman does not mirror in the water and the mirror, people see the water in the water, the mirror is known to people in austerity. " As a mirror, know its criticism or opposition