Sustainability is not an option; it's a responsibility we owe to future generations.

当你怀疑自己能否飞翔的那一刻，你就永远失去了飞翔的能力。

代数是人类创造的一种智力工具，用于清晰地表达世界的数量关系。

I don't have to be perfect, I just have to be me.

The best stories don’t talk down to children—they invite them in.

写作是一种自由和反叛的行为。

战争是外交的延续，可通过其他手段。