The only limit to our realization of tomorrow will be our doubts of today.

"The power of words can change the world, one reader at a time."

To write is to bear witness to the world and to oneself.

What is the difference between a Turing machine and the modern computer? It's the same as that between Hillary's ascent of Everest and the establishment of a Hilton hotel on its peak.

我们必须尊重土地，因为它是我们一切工作的基础。

光线不断变化，每分钟都在改变事物的氛围和美感。