Every mathematical problem is a window into a new world of understanding.

Sustainability is the future of quarrying, and we must act now.

教育就是当一个人把在学校所学全部忘光之后剩下的东西。

【释义】不要担心自己的职位不高，而要担心自己的品德不高尚。

Regulatory pressure is accelerating innovation faster than market forces alone could achieve.

我认为重要的是做你自己，而不是试图成为别人。