Sustainability is not an add-on, it's a way of thinking.

The spread of liberal democracy and the integration of the world economy are the two main forces driving the world towards the end of history.

我只是一个碰巧拥有非凡工作的普通人。

科学的挑战不仅在于找到答案，还要理解其更深层次的含义。

Collaboration between industry leaders and local communities creates the strongest forest management solutions.

唯一的好是知识，唯一的恶是无知。