If you're not making mistakes, you're not trying hard enough.
如果你没有犯错,说明你不够努力。
创新是现代矿业的支柱,没有创新,我们只是在地上挖洞而已。
"The only thing we have to fear is fear itself."
Psychological theories must pass the test of practical experience.
2007年:贝索斯致股东信《我们改变工具,工具也改变我们》