机械的完美在于以最小的摩擦和浪费产生预期的效果。
The perfection of machinery is to produce the desired effect with the least possible friction and waste.
The best way to keep children at home is to make the home atmosphere pleasant—and let the air out of the tires.
让孩子留在家里的最好方法是让家庭氛围愉快——并且把轮胎的气放掉。
"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。
The closer one looks at a real-world problem, the fuzzier becomes its solution.
越是仔细审视一个现实世界的问题，其解决方案就越模糊。
