Out, out, brief candle! Life's but a walking shadow, a poor player That struts and frets his hour upon the stage And then is heard no more. It is a tale Told by an idiot, full of sound and fury, Signifying nothing, 

在全球化时代，国家的比较优势越来越由创新能力而非传统要素禀赋决定。

做数学的过程比结果更重要。

原始人与文明人在心智能力上的差异远小于他们在文化上的差异。