Without food, man can live at most but a few weeks; without it, all other components of social justice are meaningless.

过去是幽灵，未来是梦，现在只是转瞬即逝的瞬间。

一个人思虑太多，就会失去做人的乐趣。

一个好的模型应该在复杂性和准确性之间取得平衡，捕捉基本动态而不过度拟合。