你不必成为最好的，你只需要尽力而为。
With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one - but no one at all - can tell you what to read and when and how.
The person who is slowest in making a promise is the most faithful in performance of it.
The important thing is not to stop questioning. Curiosity has its own reason for existing.
The future of mining belongs to those who can balance profit with purpose.