把这一句，留给此刻的你
If a commodity were in no way useful, - in other words, if it could in no way contribute to our gratification, - it would be destitute of exchangeable value, however scarce it might be, or whatever quantity of labour might be necessary to procure it.
如果一种商品毫无用处，换句话说，如果它对我们的满足感毫无帮助，那么它就没有可交换的价值，无论它有多么稀缺，也无论购买它需要多少劳动力。