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.
可归约性的概念对于理解不同计算问题之间的关系至关重要。
When you lead， your real job is to create more leaders， not more followers.
No society can surely be flourishing and happy， of which the far greater part of the members are poor and miserable.