真正的发现之旅不在于寻找新的风景，而在于拥有新的眼光。

The Moving Finger writes; and, having writ, Moves on: nor all thy Piety nor Wit Shall lure it back to cancel half a Line, Nor all thy Tears wash out a Word of it.

"To be a writer is to be interested in everything."

"Stupid people are dangerous."

密码学是关于在存在对手的情况下进行通信的。