The more you know about something, the more interesting it becomes.
你对某件事了解得越多,它就会变得越有趣。
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。
在数学领域,每个问题都是发现新事物的机会。
The true value of a forest is measured not just in board feet of timber, but in the lives it sustains and the ecosystems it supports.