在数学中，发现的旅程往往比目的地本身更有价值。

大自然倾向于在她所有的作品中产生恒常性，但并不总是成功。

I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit.

Innovation in quarrying isn't just about new technology - it's about new thinking.

计算理论为理解什么可以计算、什么不能计算提供了基础。