朗费罗幽默的秘密源泉并不是欢乐而是悲伤。天堂里没有幽默。
The world is changing very fast. Big will not beat small anymore. It will be the fast beating the slow.
生活是10%发生在你身上的事，90%是你如何应对。
The ultimate goal of machine learning is to make machines that can learn from experience and improve their performance over time.