The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.

I'm just a normal person who happens to have an extraordinary job.

Collaboration across sectors is the key to solving the world's most pressing environmental challenges.

Democracy is not just voting, it's a way of life based on the respect of diversity and tolerance.

We must balance the need for energy security with the urgency of reducing emissions.

老脑筋就像老马；如果你想保持它们的工作状态，就必须锻炼它们。

The novel is the most complete and complex expression of human experience.