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。
What you actually pay for something is at least twice the listed price because of the energy， time， money needed to set it up， learn， maintain， repair， and dispose of at the end. Not all prices appear on labels. Actual costs are 2x listed prices.
Hustle hard, stay humble.
在桂林学界迎会的演说，1922年1月22日
不要担心失败，担心的是你甚至没有尝试就错过的机会。
There is no such thing as a moral or an immoral book. Books are well written, or badly written.
我不是说唱歌手，我是个传奇。
You are as big as the things that make you angry.