The world is a puzzle; the pieces are scattered, and no one has the picture on the box.

I don’t like to be comfortable. I like to be pushed.

I think the best thing you can do is to be true to yourself.

数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。

每个圣人都有过去，每个罪人都有未来。

The teacher is not in school to impose certain ideas or to form certain habits in the child, but is there as a member of the community to select the influences which shall affect the child and to assist him in properly responding to those influences.

成功的关键是坚持。

the only thing we have to fear is fear itself.