传统方法蕴含智慧，但可持续发展要求我们在必要时超越它们。

In the world of computation, complexity is not an enemy, but a challenge to be understood and mastered.

译文：借鉴前代兴衰，考察当下得失。《通鉴》的写作宗旨，直指现实关怀。

The most important part of teaching is to teach what it is to know.

数学教会我们同时进行逻辑和创造性的思考。