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.
自由就是告诉人们他们不想听的事情的权利。
The writer is delegated to declare and to celebrate man's proven capacity for greatness of heart and spirit—for gallantry in defeat, for courage, compassion and love. In the endless war against weakness and despair, these are the bright rally flags of hope and of emulation.