不可以同井底的青蛙谈论大海的辽阔，因为有空间的拘束；不可以同夏天的小虫谈论冰冻的寒冷，因为有时节的局限。

Poverty is not just a lack of money; it is the absence of viable choices.

The present is the past rolled up for action, and the past is the present unrolled for understanding.

最好的书是读完仍让你久久思考的书。