The creative act is not pure. History evidences it. Ideology demands it. Society exacts it. The artist loses his freedom the moment he creates a work of art.

信心是金融体系中最宝贵的商品。

The ocean feeds billions, and it's our duty to ensure it can continue doing so for centuries to come.

在数学中，提出问题的艺术必须比解决问题更有价值。