A mathematician's work is never done; there are always more problems to solve.
数学家的工作永无止境;总有更多的问题需要解决。
What has destroyed every previous civilization has been the tendency to the unequal distribution of wealth and power.
——《在东京中国留学生欢迎大会的演说》(1905年8月13日)
Designing markets requires both economic theory and practical intuition.
真相总是丑陋的。