The true test of a civilization is not the census, nor the size of cities, nor the crops—but the kind of man the country turns out.
文明的真正考验不是人口普查，不是城市的规模，也不是庄稼的产量——而是这个国家培养出什么样的人。
科学不仅仅是一种职业；它是一种驱使我们探索未知的激情。
The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.
创新常常来自于重新思考平凡的事物。