Change is inevitable, but growth is optional.

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

The personal example of a teacher is the most useful sunshine that nothing can replace for the soul of young people.

释义：善于游泳的人容易被淹死，善于骑马的人常常落马而摔伤，他们各因自己的爱好特长而招致灾祸。比喻有专门本领的人往往因自恃而招致灾祸。

始终为最坏的情况做计划。

出自《海国图志》。这种风气一旦开启，智慧的日头就会出现，才可以见到东海的百姓，和西海的百姓没什么区别。

The only way to do great work is to love what you do.

Architecture is about giving the right answers, not asking the right questions.