Have you given any thought to your future？

History is not the past. It is the method we have evolved of organizing our ignorance of the past.

保持简单，简单的事情重复做。

写作不是揭示真相，而是创造一个可以发现真相的空间。

预测未来的最好方法就是发明它。

The challenge of our time is to create a sustainable energy future.

在数学中，提出问题的艺术必须比解决问题更有价值。