关键是设定现实的客户期望，然后不仅要满足他们，而且要超越他们——最好是以意想不到和有益的方式。
The key is to set realistic customer expectations, and then not to just meet them, but to exceed them—preferably in unexpected and helpful ways.
Data structures are the backbone of efficient algorithms.
"Every story is a story about death, but perhaps every story is also about life."
