一辈子不要做对不起人的事，世上就不会有恨自己的人。

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 cultivation of flowers and trees is the cultivation of the good, the beautiful and the true.

科学不仅仅是关于事实；它是关于事实背后的故事。