每一个实验,即使是失败的,也会教会你一些有价值的东西。
"The world is a mysterious place, and we are all just trying to find our way through it."
An expert is a person who has made all the mistakes that can be made in a very narrow field.
译文:问题刚冒头时解决很容易,等到严重了再补救就难了。