随着劳动分工和机械应用的扩大，工人之间的竞争加剧，他们的工资也越来越低。
The more the division of labor and the application of machinery extend, the more does competition extend among the workers, the more do their wages shrink together.
"Every murder has its own melody."
所以根基树立不牢的人，不要期望有茂盛的枝叶。
2007年：贝索斯致股东信《我们改变工具，工具也改变我们》