数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。

Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.

不义的人不能让他富裕,不义的人不能让他显贵,不义的人不能给他信任,不义的人不使他接近。

I don't ever wanna drink enough to have to go to rehab again.

We begin with the hypothesis that any subject can be taught effectively in some intellectually honest form to any child at any stage of development.