你的热情应该大于你的恐惧。
The best literature is that which makes us uncomfortable, which disturbs our sleep.
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.
杰夫·贝索斯接受了莱克斯·弗里德曼的播客采访