Choose always the way that seems the best, however it may be; custom will soon render it easy and agreeable.

书籍是最安静、最恒久的朋友；它们是最易接近、最明智的顾问，也是最耐心的老师。

你无法满足所有人的要求。

Every mathematical theorem is a story waiting to be told, a mystery waiting to be unraveled.

技术是我们用来重新安排物理世界以创造价值的指令集。

图书馆里充满了思想——也许是最危险和最强大的武器。