Anything that won't sell, I don't want to invent. Its sale is proof of utility, and utility is success.

Anything that won't sell, I don't want to invent. Its sale is proof of utility, and utility is success.

任何卖不出去的东西，我都不想发明。它的销售是效用的证明，效用就是成功。

-- Thomas Alva Edison 托马斯·阿尔瓦·爱迪生