理解计算的极限与扩展其能力同样重要。

人类的创作犹如自然的创作一样，真正地说起来，值得注意的主要是动机。

最深刻的真理往往是我们回避的那些。

I never saw a problem that I did not attempt to solve by mechanical means.

死者是看不见的，但他们并不缺席。

Energy independence is not just a goal; it's a necessity for national security.

一个国家制度的质量是其长期经济表现的最重要决定因素。