BETWEEN VALUE AND RICHES. 165 the idea of aggregation or collection cannot be excluded. A single grain of wheat is not wealth, although it may be said to be an article of wealth. The idea of possession also seems essential to it. Riches are not simply commo- dities as things existing, but as things pos- sessed. The most useful articles in an unin- habited country could not be termed wealth, because they would have no proprietor. The country, it is true, might be denominated rich in such articles, but only inasmuch as it would be the container or possessor of them. There would still be the same idea of possession in- volved in our language. Whatever difficulty may be found in furnish- ing a good and complete definition of riches, there can be none in establishing the difference between the terms riches and value, as used in the science of Political Economy. Riches are the attribute of men, value is the attribute of commodities. A man or a community is rich; a pearl or a diamond is valuable. He pos-