The progress of mathematics is measured by the number of problems it can solve.

一本好书应该让你在读完时略感疲惫。你在阅读时已经活了好几辈子。

释义：早早成功的人未必能取得长久的成就，晚点成功的人也未必不能达到目标。因此，不能因为年轻就自满骄傲，也不能因为年老就自暴自弃。

如果你没有进步，就是在落后——尤其是在像畜牧业这样充满活力的行业。

The greatest sweetener of human life is Friendship. To raise this to the highest pitch of enjoyment, is a secret which but few discover.

"A book is a treasure that never loses its value."

唯一能让你成功的是你自己的努力。