密码学的艺术是使破解系统的成本超过受保护信息的价值。
The art of cryptography is to make the cost of breaking the system exceed the value of the information protected.
数字世界对奢侈品不是威胁，而是重塑它的机会。
Find more pleasure in intelligent dissent than in passive agreement, for, if you value intelligence as you should, the former implies a deeper agreement than the latter.
In the end, we only regret the chances we didn't take.