尼采如是说

But it is the same with man as with the tree. The more he seeks to rise into the height and light, the more vigorously do his roots struggle earthward, downward, into the dark, the deep - into evil.

其实人跟树是一样的，越是向往高处的阳光，它的根就越要伸向黑暗的地底。

                                                        ——尼采《查拉图斯特拉如是说》