Dean Kenning << >> Chapter 1: The Commodity Page 177 Now listen how those commodities speak through the mouth of the economist: 'Value (i.e. exchange-value) is a property of things, riches (i.e. use-value) of man. Value, in this sense, necessarily implies exchanges, riches do not. ' ‘Riches (use-value) are the attribute of man, value is the attribute of commodities. A man or a community is rich, a pearl or a diamond is valuable ... A pearl or a diamond is valuable as a pearl or diamond.' So far no chemist has ever discovered exchange-value either in a pearl or a diamond. The economists who have discovered this chemical substance, and who lay special claim to critical acumen, nevertheless find that the use-value of material objects belongs to them independently of their material properties, while their value, on the other hand, forms a part of them as objects.