把这一句，留给此刻的你

It is a maxim of cryptology that what one man can devise, another can unravel. This principle keeps armies of tax lawyers and accountants employed, but adds nothing to our national productivity.

这是密码学的格言:一个人能想出的，另一个人能解开。这一原则使大批税务律师和会计师得以受雇，但对我们国家的生产力毫无帮助。

— Walter Wriston 李世同