密码学的目标是使破解系统的成本超过受保护信息的价值。
The goal of cryptography is to make it so that the cost of breaking the system exceeds the value of the information protected.
用真实之心待人，事情虽然不一定成功，但过后别人看见了我的诚意；用欺诈的心肠处理事情，别人虽然一时间受到迷惑，但过后别人必然见到你的虚伪狡诈。
"Time is the school in which we learn, time is the fire in which we burn."
为了发现什么是真实的，值得活下去。
Some people don't like change, but you need to embrace change if the alternative is disaster.