很多高明人士经常耸人听闻地声称的所谓“真实世界的复杂性”实际上不过是他们自己脑子里的自相矛盾。
The art of cryptography is to make the cost of breaking the system exceed the value of the information protected.
最好的数学不仅正确，而且具有启发性。
Though love seems the fastest of all growths, it is really the slowest. No man or woman knows what perfect love is, until they have been married a quarter of a century.