The tears of the world are a constant quantity. For each one who begins to weep, somewhere else another stops. The same is true of the laugh.

The essence of computational thinking is abstraction and automation.

自然的法则是无情的。

L-函数的研究证明了抽象在数学中的力量。

【释义】无论是灾祸还是幸福，都是自己做事得到的结果。