Premature optimization is the root of all evil.

世界充满了神奇的事物，耐心地等待我们的感官变得更加敏锐。

一个好的数学家是懒惰的，但是以一种建设性的方式。

我不相信有罪恶的快乐——如果你喜欢某样东西，就享受它。

"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."