The blood in the animal body is impelled in a circle, and is in a state of ceaseless motion.
孔子说:“有益的爱好有三种,有害的爱好有三种。爱好礼乐、爱好称赞别人的优点,爱好广结善友,有益处;爱好放荡、爱好闲逛、爱好大吃大喝,有害处。”