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。
If you are insecure, guess what? The rest of the world is, too. Do not overestimate the competition and underestimate yourself. You are better than you think.
历史不是关于陌生人的故事，不是来自另一个世界的异类；它是关于如果早出生一点的我们的故事。
"The true value of technology lies in its ability to empower people and organizations to achieve more."
文学是最具颠覆性的武器，因为它通过说服而非武力改变思想。
The best way to predict the future is to create it.
To understand the mind, we must first understand its evolutionary purpose.