在密码学的世界里，唯一安全的系统是永远不连接到任何网络的系统。

If time travel is possible, where are the tourists from the future?

I don’t want to be on the cover of Playboy. I want to be on the cover of Rolling Stone.

To understand the future, one must first understand the past.

The only failure is not trying.

The strongest companies are those that balance profit with purpose.