"Books are the keys to understanding the world."

We are all searching for something, but we don't always know what it is.

The first task is to understand the problem, the second to find a solution, and the third to carry it out.

小额信贷的真正力量，是让穷人相信自己的潜力。

思想和背景的多样性推动突破性发现。

数学的本质不是使简单的事情复杂化，而是使复杂的事情简单化。