机器学习中的挑战不仅仅是发现数据中的模式，而是发现能够推广到新的、未见过的数据的模式。

程序中最重要的是数据结构。

Looking back at the 21-year-old that I was at graduation, is a slightly uncomfortable experience for the 42-year-old that she has become. Half my lifetime ago, I was striking an uneasy balance between the ambition I had for myself, and what those closest to me expected of me.

无论你的背景如何或来自哪里，只要你有梦想和目标，这才是最重要的。

价格合理的伟大企业胜过价格便宜的好企业。