人为某样东西实际支付的成本至少是标价的两倍，因为买来后设置、学习、维护、修理，以及最后处置，也需要耗费精力、时间和钱。不是所有的实际成本都在价签上。实际成本是标价的2倍。
Innovation isn't about reinventing the wheel; it's about making the wheel roll smoother and faster.
In the end, we will remember not the words of our enemies, but the silence of our friends.
创新不仅仅是创造新产品，更是重新构想我们如何解决问题。
所有好书都有一个共同点——它们比真实发生的事更真实。
Every setback is a setup for a comeback.
I don't think about how many records I'm selling. I just think about the music.