你必须熬过一些糟糕的日子，才能赢得生命中最美好的时光。

The process of discovery in mathematics is often more important than the result itself.

The past is not a static thing. It moves and shifts with us.

要理解心灵，就要研究它在现实生活中的运作。

To live is to suffer， to survive is to find some meaning in the suffering.

Energy security is national security.

生活是世界上最罕见的事情。大多数人只是存在，仅此而已。

数学不是关于数字、方程、计算或算法的：它是关于理解的。