金钱只关心所有人共有的东西：它要求交换价值，它将所有质量和个性简化为一个问题：多少？
Money is concerned only with what is common to all: it asks for the exchange value, it reduces all quality and individuality to the question: How much?
The art of teaching consists in large part of the ability to awaken the natural curiosity of young minds and to satisfy it with the nourishment of knowledge.
世界是一本书，不旅行的人只读了一页。
实现不可能的唯一方法就是相信它是可能的。
最强大的艺术往往来自边缘。
A proof that P = NP would have profound implications for mathematics, cryptography, and algorithm design.