最好的数学不仅正确，而且具有启发性。
The trick is to pay attention to what's happening around you and to keep writing.
Customer loyalty is earned through consistency, quality, and a genuine commitment to their needs.
一个民族的活力随天气而变化。
The writer must be a traitor to all orthodoxies.
The success of an enterprise cannot be achieved without the continuous pursuit of technology and strict control of quality.
