Every ton of ore we extract carries with it a responsibility to the future.

数算练习告诉我们算术运算的原理，而不是单单的记忆和不断演算。

I'm very confident in my own skin.

You have to believe in yourself when no one else does.

数学的快乐来自于复杂事物变得简单的清晰时刻。

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."

The only way to be truly satisfied is to do what you believe is great work.

文学让我们能够旅行到其他世界、其他生活、其他现实。