"The beauty of science is that it allows us to understand the world in a way that is both profound and practical."

信贷市场的歧视让穷人支付更高的利息。

The house,the stars,the desert,what givethem their beauty is something that is invisible.

美德只能在平等中繁荣。

永远不要停止质疑如何改进事物。