Machinery and labor-saving devices are only valuable as they serve to reduce the cost of manufacture.
机械和节省劳力的装置只有在降低制造成本时才具有价值。
I tell you that virtue is not given by money，but that from virtue comes money.
Every day is a blessing, even the bad ones.
最好的产品来自于对问题的深刻理解，而不仅仅是想要制造新东西的愿望。