invariable standard ofの例文

例文

1. The political economists sought in vain for a invariable standard of value, and proposed theories of money which were hardly plausible.
2. At the end of his life, David Ricardo had to " conclude, rather sadly, that'there is no such thing in nature as a perfect measure of value'( 1823, p . 404 )  there is no such thing as an invariable standard of value ".