当你怀疑自己是否能飞的那一刻,你就永远失去了飞翔的能力。
The moment you doubt whether you can fly, you cease for ever to be able to do it.
每一个数学定理都是一个故事,一个通过逻辑和理性展开的叙述,引领我们更深入地理解世界。
预测未来的最好方式就是创造未来。
I’ve had my best years after fifty. Age is just a number—it’s your attitude that counts.