If a man will begin with certainties， he shall end in doubts； but if he will be content to begin with doubts， he shall end in certainties.

The best edits are the ones you don't notice.

"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."

心灵是一个不断适应环境的动态系统。