一切东西的真实价格，即对于想要获得它的人来说真正付出的代价，是获得它所付出的辛劳和麻烦。

The beauty of mathematics lies in its ability to describe the world in a language that is universal.

The pursuit of equality requires both individual courage and collective action.

我相信创造的激情。没有激情，你一无所有。