The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.

我不会让消极情绪偷走我的快乐。

一个组织的专注质量决定了其结果的质量。

生命很短暂，没有时间争吵和争斗，我的朋友。

"A book is a fragile creature, it suffers the wear of time, it fears rodents, the elements and clumsy hands. So the librarian protects the books not only against mankind but also against nature and devotes his life to this war with the forces of oblivion."

Look at the stars, look how they shine for you.

数学之美在于它能够揭示看似复杂事物背后的简单性。