经济史告诉我们，改变是可能的，但很少是容易的。
Economic history teaches us that change is possible, but it is rarely easy.
一本书就是你握在手中的一个梦想。
We have a responsibility to use our science to improve lives, not just to make profits.
我们对过去了解得越多，就越能理解现在。
To understand the future of secure communication, one must first understand the limitations of current cryptographic methods.
Sometimes you have to lose yourself before you can find yourself.