世界充满了来来往往的迹象和奇迹，如果你幸运的话，你可能会抓住其中一个的尾巴。
The world is full of signs and wonders that come, and go, and if you are lucky you might catch the tail of one.
The more you invest in a bad relationship, the more it costs you.
"The world is a book, and those who do not travel read only one page."
忠于自己，永远不要让任何人告诉你你做不到某件事。
A miracle:an event described by those to whom it was told by men who did not see it.
因果推断不仅仅是统计显著性；它关乎理解数字背后的机制。
唯一的限制是你为自己设定的限制。