"Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors, and the most patient of teachers."
书籍是最安静、最恒久的朋友;它们是最易接近、最睿智的顾问,也是最耐心的老师。
大自然似乎有意让电的定律从大空间观察到的现象中推导出来,而不是从实验室狭窄范围内观察到的现象中推导出来。