The art of cryptography is to make the cost of breaking the system exceed the value of the information protected.

When obedience ceases to be an irritant and becomes our quest, in that moment God will endow us with power.

Focus on progress, not perfection.

今天我们种下的每一棵树都是留给未来的遗产。

质量安全是水产品的生命线，我们必须严把质量关。

至今一切社会的历史都是阶级斗争的历史。

保守秘密的最好方法是永远不要有秘密。