形式化方法的美在于它们能够提供关于系统行为的绝对保证。

When survival is the daily agenda, long-term planning becomes a luxury.

The key to success in business is not just to satisfy customers but to exceed their expectations.

意识到社会结构的概念并敏感地使用它，就是能够在各种环境中追踪这种联系。

世界上充满了显而易见的事情，却没有人注意到。