每当一座煤电厂关闭，美国的一部分心脏也随之关闭。
Every time a coal plant closes, a piece of America's heart closes with it.
数学之美在于它能够精确而优雅地描述自然界的基本法则。
出自先秦《荀子·修身》。批评我而又批评得恰当的，他便是我的老师；肯定我而又实事求是的，他便是我的朋友；讨好奉承我的，他便是我的仇人。说明修身养性要有闻过则喜的雅量，要亲近正人君子而远离谄谀小人。这样，才会有利于自己道德的修炼进步。
We've done price elasticity studies, and the answer is always that we should raise prices. We don't do that, because we believe -- and we have to take this as an article of faith -- that by keeping our prices very, very low, we earn trust with customers over time, and that that actually does maximize free cash flow over the long term.
人类的所有成就都源于创造性幻想。那么我们没有权利轻视想象力。
我相信活在当下，充分利用每一天。
To this day, I have never taken a course anywhere, in chemistry, economics, psychology, or business.
时至今日，我从未在任何地方选修过化学、经济学、心理学或商业课程。