水里的游鱼是沉默的,陆地上的兽类是喧闹的,空中的飞鸟是歌唱着的。但是,人类却兼有海里的沉默,地上的喧闹与空中的音乐。
It has been said that man is a rational animal. All my life I have been searching for evidence which could support this.