独处之于精神，犹如节食之于身体。

云计算不仅是技术的变革，更是商业模式的变革。

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.

最伟大的知识是认清自己。

预测未来的最好方法就是创造未来。