数学不是关于数字、方程、计算或算法的：它是关于理解的。

I went to the woods because I wanted to live deliberately. I wanted to live deep and suck out all the marrow of life. To put to rout all that was not life. And not, when I had come to die, discover that I had not lived.

Risk management is more important than making money.

数学不仅仅是一种工具；它是一种思维方式。