任何变化，即使是变得更好，总是伴随着缺点和不适。
释义：培养自己好的品德、性情，即使细微的地方，也一定要谨慎。
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 only way to get rid of a temptation is to yield to it."
The act of writing is an act of discovery.
In mathematics, truth is somewhere out there in a place we don’t yet know, and the only way we can hope to find it is by exploring.