Every failed experiment is a step closer to success, as long as you learn from it.
"The greatest truths are the simplest, and so are the greatest men."
最简单的故事往往有最深刻的含义。
了解贫困的最佳方式是走出去,与穷人交谈。
每一本书都是一次旅程,而每一次旅程都是一本书。