Money and power don't change you, they reveal you.

The world is moving so fast these days that the man who says it can't be done is generally interrupted by someone doing it.

可持续发展不再是选择，而是生存的必需。

The language of mathematics is universal, transcending cultural and linguistic barriers.

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

In every society, there are voices that are silenced; literature gives them a chance to speak.

如果你没有至少90%的时间失败，那么你的目标还不够高。