忧先于事，故能无忧；事至而忧，无救于事。
译文：在事前考虑周全，做到未雨绸缪，做事时才不会出现意外和麻烦；事到临头才忧心忡忡，慌忙应对，结果就是无济于事。赏析：做任何事，我们都要提前谋划，凡事做最充足的准备，做最坏的打算。事到临头才寻求解决之法，为时已晚了。
The goal of software engineering is to control complexity, not to create it.
The past is a place of reference, not a place of residence.
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.