比较是幸福的最大杀手。如果一定要比较，就拿昨天的自己作为比较对象。

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.

一本书永远是通往另一个世界的敞开之门。