To do mathematics is to engage in an act of discovery and conjecture, intuition and inspiration.

煤炭的真实成本必须既考虑其即时价值，也考虑其对社区和生态系统的长期影响。

我们站在巨人的肩膀上，但仍有如此多的东西有待发现。

我没有任何信息。我只是画画。

"We are all prisoners of our own memories, and the past is a jail from which we can never escape."