Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.

可持续性是采石业的未来，我们必须立即行动。

一本正经地对待消遣和刻板地追求学问，结果就会成为一个学究。

You can dream, create, design and build the most wonderful place in the world...but it requires people to make the dream a reality.