We live in a world where the past is always present, and the present is always haunted by the past.

中心地的规模和分布遵循一定的规律。

Leadership means making tough decisions even when they are unpopular.

到了白头之年，我们同甘共苦；历史的是非功过，又由谁来评定呢？

L-函数的算术是探索宇宙隐藏模式的旅程。