价格是你付出的，而价值才是你得到的。
永远不要，不要，不要，不要放弃。
你对自己了解得越多，你对在别人身上看到的东西就越有耐心。
"We are all apprentices in a craft where no one ever becomes a master."
The art of cryptography is to make the cost of breaking the system exceed the value of the information protected.