He who loves God cannot endeavor that God should love him in return.
爱上帝的人不能期望上帝回报他的爱。
To live is to suffer, to survive is to find some meaning in the suffering.
"Change is the only constant in the universe."
生活即教育。
Mental life is a series of experiments in adaptation.
我们对月球表面的了解比对海底的了解还要多。