宇宙是一座黑暗森林，每个文明都是带枪的猎人，像幽灵般潜行于林间。

Mental processes exist because they serve a purpose.

The best leaders are those who listen more than they speak, and act with integrity.

The whole secret of life is to be interested in one thing profoundly and in a thousand things well.

We are all in the gutter, but some of us are looking at the stars.

A nation's strength lies in the resilience and creativity of its people.

数学是上帝用来书写宇宙的语言。